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          <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LiabilitiesAbstract" xlink:label="us-gaap_LiabilitiesAbstract"/>
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          <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LineOfCreditFacilityCommitmentFeePercentage" xlink:label="us-gaap_LineOfCreditFacilityCommitmentFeePercentage"/>
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          <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SubsequentEventsTextBlock" xlink:label="us-gaap_SubsequentEventsTextBlock"/>
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          <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_QuarterlyFinancialInformationDisclosureAbstract" xlink:label="us-gaap_QuarterlyFinancialInformationDisclosureAbstract"/>
          <link:loc xlink:type="locator" xlink:href="ck0001925309-20241231.xsd#ck0001925309_OtherMember" xlink:label="ck0001925309_OtherMember"/>
          <link:loc xlink:type="locator" xlink:href="ck0001925309-20241231.xsd#ck0001925309_JanuaryTwoThousandThirtyNotesMember" xlink:label="ck0001925309_JanuaryTwoThousandThirtyNotesMember"/>
          <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/cyd/2024/cyd-2024.xsd#cyd_CybersecurityRiskManagementPositionsOrCommitteesResponsibleFlag" xlink:label="cyd_CybersecurityRiskManagementPositionsOrCommitteesResponsibleFlag"/>
          <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales"/>
          <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_MeasurementInputComparabilityAdjustmentMember" xlink:label="us-gaap_MeasurementInputComparabilityAdjustmentMember"/>
          <link:loc xlink:type="locator" xlink:href="ck0001925309-20241231.xsd#ck0001925309_ABLFILOTermLoanMember" xlink:label="ck0001925309_ABLFILOTermLoanMember"/>
          <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ChangeInAccountingPrincipleAccountingStandardsUpdateImmaterialEffect" xlink:label="us-gaap_ChangeInAccountingPrincipleAccountingStandardsUpdateImmaterialEffect"/>
          <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherNonoperatingIncome" xlink:label="us-gaap_OtherNonoperatingIncome"/>
          <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/country/2024/country-2024.xsd#country_NL" xlink:label="country_NL"/>
          <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AlternativeInvestment" xlink:label="us-gaap_AlternativeInvestment"/>
          <link:loc xlink:type="locator" xlink:href="ck0001925309-20241231.xsd#ck0001925309_FirstLienLoanDueDecemberTwoThousandTwentyFiveMember" xlink:label="ck0001925309_FirstLienLoanDueDecemberTwoThousandTwentyFiveMember"/>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfCarryingValuesAndEstimatedFairValuesOfDebtInstrumentsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Carrying Values and Estimated Fair Values of Debt Instruments [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfCarryingValuesAndEstimatedFairValuesOfDebtInstrumentsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value of Company's 2029 and 2030 Notes</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Statement [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Statement [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InterestRateSwapFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Interest rate swap four.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InterestRateSwapFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Rate Swap Four [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InterestRateSwapFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest Rate Swap Four</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfCapitalGainIncentiveFeePriorToExchangeListing_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Percentage of capital gain incentive fee prior to exchange listing.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfCapitalGainIncentiveFeePriorToExchangeListing_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Percentage of Capital Gain Incentive Fee Prior to Exchange Listing</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfCapitalGainIncentiveFeePriorToExchangeListing_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of capital gain incentive fee prior to exchange listing</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Instrument</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="cyd_CybersecurityRiskBoardOfDirectorsOversightTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cybersecurity Risk Board of Directors Oversight [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtAndEquitySecuritiesUnrealizedGainLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Debt and Equity Securities, Unrealized Gain (Loss), Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtAndEquitySecuritiesUnrealizedGainLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt and Equity Securities, Unrealized Gain (Loss)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtAndEquitySecuritiesUnrealizedGainLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net Unrealized Gain (Loss)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PharmaceuticalsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Pharmaceuticals.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PharmaceuticalsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Pharmaceuticals [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PharmaceuticalsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Pharmaceuticals</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_HumanResourceSupportServicesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Human Resource Support Services.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_HumanResourceSupportServicesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Human Resource Support Services [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_HumanResourceSupportServicesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Human Resource Support Services</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentInterestRatePaidInKind_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest Rate, PIK</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentInterestRatePaidInKind_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment, Interest Rate, Paid in Kind</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfAllPreIncentiveFeeNetInvestmentIncomeAfterCatchUpAchieved_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Percentage of all pre-incentive fee net investment income after catch-up achieved.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfAllPreIncentiveFeeNetInvestmentIncomeAfterCatchUpAchieved_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Percentage Of All Pre Incentive Fee Net Investment Income After Catch Up Achieved</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfAllPreIncentiveFeeNetInvestmentIncomeAfterCatchUpAchieved_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of all pre-Incentive Fee net investment income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityAddressPostalZipCode_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Address, Postal Zip Code</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="cyd_CybersecurityRiskBoardCommitteeOrSubcommitteeResponsibleForOversightTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cybersecurity Risk Board Committee or Subcommittee Responsible for Oversight [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ABLFILOTermLoanDueMayTwoThousandTwentySixMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">ABL FILO Term Loan due 5/2026)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ABLFILOTermLoanDueMayTwoThousandTwentySixMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">ABL FILO Term Loan Due May Two Thousand Twenty Six.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ABLFILOTermLoanDueMayTwoThousandTwentySixMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">A B L F I L O Term Loan Due May Two Thousand Twenty Six [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfManagementFeesInExcessOfAverageAggregateDrawnCapital_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Percentage of management fees in excess of average aggregate drawn capital.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfManagementFeesInExcessOfAverageAggregateDrawnCapital_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Percentage of Management Fees in Excess of Average Aggregate Drawn Capital</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfManagementFeesInExcessOfAverageAggregateDrawnCapital_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of management fees in excess of average aggregate drawn capital</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienRevolvingLoanAprilTwoThousandTwentyFiveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Revolving Loan due 4/2025</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienRevolvingLoanAprilTwoThousandTwentyFiveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First-lien Revolving Loan April Two Thousand Twenty Five.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienRevolvingLoanAprilTwoThousandTwentyFiveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Revolving Loan April Two Thousand Twenty Five [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Recurring and Nonrecurring [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityIncorporationStateCountryCode_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Incorporation, State or Country Code</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_TwoThousandTwentyNineAndJanuaryTwoThousandThirtyNotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Two Thousand Twenty Nine And January Two Thousand Thirty Notes[Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_TwoThousandTwentyNineAndJanuaryTwoThousandThirtyNotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Two thousand twenty nine and january two thousand thirty notes.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_TwoThousandTwentyNineAndJanuaryTwoThousandThirtyNotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2029 Notes and January 2030 Notes</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueJuneTwoThousandTwentyFiveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Loan due 6/2025</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueJuneTwoThousandTwentyFiveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due June Two Thousand Twenty Five [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueJuneTwoThousandTwentyFiveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First lien loan due june two thousand twenty five.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestPaidNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Paid, Excluding Capitalized Interest, Operating Activities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestPaidNet_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest paid during the period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentCompanyInvestmentIncomeLossPerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net investment income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentCompanyInvestmentIncomeLossPerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment Company, Investment Income (Loss), Per Share</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PledgedStatusAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Pledged Status [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PledgedStatusAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Pledged Status</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_CapitalCall_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Capital calls</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_CapitalCall_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Capital Call</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_CapitalCall_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Capital Call</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_DeferredTaxLiabilityPertainingToUnrealizedGainsRelatedToInvestments_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Deferred tax liability pertaining to unrealized gains on investment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_DeferredTaxLiabilityPertainingToUnrealizedGainsRelatedToInvestments_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Deferred Tax Liability Pertaining to Unrealized Gains Related to Investments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_DeferredTaxLiabilityPertainingToUnrealizedGainsRelatedToInvestments_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Deferred tax liability pertaining to unrealized gains related to investments.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RealEstateSectorMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Real Estate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RealEstateSectorMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Real Estate Sector [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueDecemberTwoThousandTwentyThreeOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First lien loan due December two thousand twenty three one.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueDecemberTwoThousandTwentyThreeOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due December Two Thousand Twenty Three One [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueDecemberTwoThousandTwentyThreeOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien loan($22,507par,due12/2023)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ForeignExchangeForwardMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Foreign Exchange Forward [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ForeignExchangeForwardMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Foreign Currency Forward Contract</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Shares, Outstanding</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Ending balance,Shares</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Beginning balance, Shares</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Shares Outstanding, End of Period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueByFairValueHierarchyLevelAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Hierarchy and NAV [Axis]</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_O2024Q4DividendsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">O2024 Q4 Dividends [Member]</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NotesPayableFairValueDisclosure_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SubscriptionFacilityMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Subscription facility.</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_OutsystemsLuxcoSarlMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">OutSystems Luxco SARL [Member]</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_RevolverMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Revolver.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_RevolverMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Revolver [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_RevolverMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Revolver</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetNetAmortizationOfDiscountOnInvestment_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Net Amortization Of Discount On Investment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetNetAmortizationOfDiscountOnInvestment_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net amortization of discount on securities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetNetAmortizationOfDiscountOnInvestment_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Fair value measurement with unobservable inputs reconciliation recurring basis asset net amortization of discount on investment.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Investments_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Remaining investments</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_TwoThousandThirtyNotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Two thousand thirty notes.</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongTermDebtWeightedAverageInterestRateOverTime_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted average interest rate</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestRateSwapMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Rate Swap [Member]</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfStockByClassTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stock, Class of Stock [Table]</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_OptionalExtensionPeriodOfMaturityDateOfLineOfCreditFacility_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Optional extension period of maturity date of line of credit facility.</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_OptionalExtensionPeriodOfMaturityDateOfLineOfCreditFacility_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Optional extension period of maturity date of line of credit facility</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativesPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Financial and Derivative Instruments</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DividendsPayableLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Dividends Payable [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentIdentifierAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment, Identifier [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_OriginalIssueDiscountNetOfAccretion_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Original issue discount, net of accretion.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_OriginalIssueDiscountNetOfAccretion_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Original Issue Discount Net Of Accretion</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_EquityMethodInvesteeNameDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment, Name [Domain]</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueDisclosureAssetAndLiabilityNotMeasuredAtFairValueLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value Disclosure Asset And Liability Not Measured At Fair Value [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ArrangementsAndNonarrangementTransactionsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Collaborative Arrangement and Arrangement Other than Collaborative [Domain]</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DividendPayableDateToBePaidDayMonthAndYear_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Payment Date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DividendPayableDateToBePaidDayMonthAndYear_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Dividends Payable, Date to be Paid</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentOwnedAtFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Fair Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentOwnedAtFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment Owned, Fair Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentOwnedAtFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Fair Value, Ending balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentOwnedAtFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Fair Value, Beginning balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentOwnedAtFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Investments at fair value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RelatedPartyTransactionLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Related Party Transaction [Line Items]</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_TwoThousandTwentyNineNotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Two Thousand Twenty Nine Notes [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_TwoThousandTwentyNineNotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Two thousand twenty nine notes.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_TwoThousandTwentyNineNotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2029 Notes</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="cyd_CybersecurityRiskManagementProcessesIntegratedTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cybersecurity Risk Management Processes Integrated [Text Block]</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_NetRealizedGainsLossesOnInvestmentsAndForeignCurrencyTranslation_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Net realized gains losses on investments and foreign currency translation.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockholdersEquityNoteDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net Assets</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FutureRealizedCapitalGainsPriorToAprilFirstTwoThousandFourteenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Future Realized Capital Gains Prior to April 1, 2014</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FutureRealizedCapitalGainsPriorToAprilFirstTwoThousandFourteenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Future realized capital gains prior to April first two thousand fourteen.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfAllRemainingPreIncentiveFeeNetInvestmentIncomeQuarterly_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Percentage of all remaining pre-incentive fee net investment income quarterly.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfAllRemainingPreIncentiveFeeNetInvestmentIncomeQuarterly_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Percentage Of All Remaining Pre Incentive Fee Net Investment Income Quarterly</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfAllRemainingPreIncentiveFeeNetInvestmentIncomeQuarterly_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of all remaining pre-Incentive Fee net investment income quarterly</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ClassAOneUnitsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Class A-1 units.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ClassAOneUnitsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Class A One Units [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ClassAOneUnitsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Class A-1 Units</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienSecuredNoteDueJulyTwoThousandTwentyThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Secured Note due 7/2023</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfPreIncentiveFeeNetInvestmentIncomePayableAfterHurdleRateReachedAndCatchUpAchieved_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Percentage Of Pre Incentive Fee Net Investment Income Payable After Hurdle Rate Reached And Catch Up Achieved</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfPreIncentiveFeeNetInvestmentIncomePayableAfterHurdleRateReachedAndCatchUpAchieved_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of pre-Incentive Fee net investment income payable in any quarter</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ShiftmoveGmbhMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Shiftmove GmbH</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentCarryingAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Principal amount of debt</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentCarryingAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Long-Term Debt, Gross</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentCarryingAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Outstanding Principal</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Amount Available</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Line of Credit Facility, Remaining Borrowing Capacity</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Line of credit facility, remaining borrowing capacity</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CostApproachValuationTechniqueMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Valuation, Cost Approach [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CostApproachValuationTechniqueMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cost</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DividendsPayableDateDeclaredDayMonthAndYear_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Date Declared</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DividendsPayableDateDeclaredDayMonthAndYear_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Dividends Payable, Date Declared</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AzuriteIntermediateHoldingsIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Azurite Intermediate Holdings, Inc [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AzuriteIntermediateHoldingsIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Azurite Intermediate Holdings, Inc</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AzuriteIntermediateHoldingsIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Azurite Intermediate Holdings, Inc.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueOctoberTwoThousandTwentySixTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First lien loan due October two thousand twenty six two.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueOctoberTwoThousandTwentySixTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due October Two Thousand Twenty Six Two [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueOctoberTwoThousandTwentySixTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien loan ($46,948 par, due 10/2026)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Measurement Inputs and Valuation Techniques [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityCentralIndexKey_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Central Index Key</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueAprilTwoThousandTwentySevenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First-lien Loan Due April Two Thousand Twenty Seven.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueAprilTwoThousandTwentySevenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due April Two Thousand Twenty Seven [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueAprilTwoThousandTwentySevenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Loan ($45,000 par, Due 4/2027)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule Of Available For Sale Securities [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UnfundedLoanCommitmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Unfunded Loan Commitment [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UnfundedLoanCommitmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Unfunded Loan Commitments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ElectronicsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Electronics [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ElectronicsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Electronics.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ElectronicsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Electronics</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Purchases or originations</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_AuditorOpinionTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Auditor Opinion [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TrusteeFees_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Trustee Fees</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TrusteeFees_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Trustees' fees</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Increase (Decrease) in Operating Capital [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Changes in operating assets and liabilities:</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockSharesIssued_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Common stock, shares issued</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockSharesIssued_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common shares, issued</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockSharesIssued_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Number of Common Shares Issued</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienNoteDueJuneTwoThousandTwentyFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First Lien Note Due June Two Thousand Twenty Four.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienNoteDueJuneTwoThousandTwentyFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Note Due June Two Thousand Twenty Four [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienNoteDueJuneTwoThousandTwentyFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Note ($33,330 par, Due 6/2024)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ExciseAndSalesTaxes_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Excise and Sales Taxes</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ExciseAndSalesTaxes_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_UnRealizedInvestmentGainsLossesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Un-realized investment gains (losses).</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_UnRealizedInvestmentGainsLossesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Un Realized Investment Gains Losses [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_UnRealizedInvestmentGainsLossesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net change in unrealized gains (losses):</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Measurement Inputs and Valuation Techniques [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienRevolvingLoanDueAprilTwoThousandTwentyFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Revolving Loan Due 4/2024</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienRevolvingLoanDueAprilTwoThousandTwentyFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First-Lien Revolving Loan Due April Two Thousand Twenty Four [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienRevolvingLoanDueAprilTwoThousandTwentyFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First-Lien Revolving Loan Due April Two Thousand Twenty Four [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Increase (Decrease) in Prepaid Expense and Other Assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Prepaid expenses and other assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfQuarterlyFinancialInformationTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Selected Quarterly Financial Data</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfQuarterlyFinancialInformationTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Quarterly Financial Information [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueOctoberTwoThousandTwentyTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Loan ($56,020 par, Due 10/2022)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueOctoberTwoThousandTwentyTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First-lien Loan Due October Two Thousand Twenty Two.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueOctoberTwoThousandTwentyTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due October Two Thousand Twenty Two [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentCompanyExpenseRatioVoluntaryFeeWaiver_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Ratio of net expenses to average net asset, excluding waiver</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentCompanyExpenseRatioVoluntaryFeeWaiver_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment Company, Expense Ratio, Voluntary Fee Waiver</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeStatementAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Income Statement [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityAddressStateOrProvince_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Address, State or Province</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ReinvestmentOfDividends_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Reinvestment of dividends during the period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ReinvestmentOfDividends_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Reinvestment of Dividends</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ReinvestmentOfDividends_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Reinvestment of dividends</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net Investment Income Before Income Taxes</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_TwoThousandTwentyNineAndTwoThousandThirtyNotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Two Thousand Twenty Nine And Two Thousand Thirty Notes [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_TwoThousandTwentyNineAndTwoThousandThirtyNotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Two thousand twenty nine and two thousnd thirty notes.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_TwoThousandTwentyNineAndTwoThousandThirtyNotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2029 and 2030 Notes</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueJuneTwoThousandTwentySixTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First lien loan due June two thousand twenty six two.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueJuneTwoThousandTwentySixTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due June Two Thousand Twenty Six Two [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueJuneTwoThousandTwentySixTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien loan ($53,522 par, due 6/2026)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ConvertibleNoteDueDecemberTwoThousandTwentyFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Convertible Note due 12/2024</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ConvertibleNoteDueDecemberTwoThousandTwentyFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Convertible Note Due December Two Thousand Twenty Four [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ConvertibleNoteDueDecemberTwoThousandTwentyFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Convertible note due december two thousand twenty four.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LossContingenciesTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Loss Contingencies [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LossContingenciesTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Loss Contingencies [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccountingStandardsUpdateExtensibleList_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accounting Standards Update [Extensible Enumeration]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccountingStandardsUpdateExtensibleList_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accounting Standards Update [Extensible Enumeration]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueJuneTwoThousandTwentySixMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Loan due 6/2026</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueJuneTwoThousandTwentySixMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First-lien Loan Due June Two Thousand Twenty Six.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueJuneTwoThousandTwentySixMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due June Two Thousand Twenty Six [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInDueFromAffiliatesCurrent_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Other payables to affiliate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInDueFromAffiliatesCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Increase (Decrease) in Due from Affiliates, Current</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoansDueAugustTwoThousandTwentyFiveOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First Lien Loans Due August Two Thousand Twenty Five One.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoansDueAugustTwoThousandTwentyFiveOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loans Due August Two Thousand Twenty Five One [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoansDueAugustTwoThousandTwentyFiveOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien loan ($41,768 par, due 8/2025)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AssetValuationWaterfallMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Asset Valuation Waterfall [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AssetValuationWaterfallMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Asset valuation waterfall.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AssetValuationWaterfallMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Asset Valuation Waterfall</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueAugustTwoThousandTwentySixOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First lien loan due august two thousand twenty six one.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueAugustTwoThousandTwentySixOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due August Two Thousand Twenty Six One [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueAugustTwoThousandTwentySixOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien loan ($5,127 par, due 8/2026)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_RevolverEquityMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Revolver &amp; Equity</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_RevolverEquityMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Revolver &amp; Equity [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_RevolverEquityMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Revolver &amp; equity</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanOneDueJulyTwoThousandTwentyFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien loan due 7/2024</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanOneDueJulyTwoThousandTwentyFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan One Due July Two Thousand Twenty Four [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanOneDueJulyTwoThousandTwentyFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First Lien Loan One Due July Two Thousand Twenty Four.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DividendsPayableDateOfRecordDayMonthAndYear_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Record Date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DividendsPayableDateOfRecordDayMonthAndYear_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Dividends Payable, Date of Record</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_HornetsecurityHoldingGmbhMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Hornetsecurity Holding GMBH.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_HornetsecurityHoldingGmbhMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Hornetsecurity Holding GMBH Member</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_HornetsecurityHoldingGmbhMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Hornetsecurity Holding GmbH</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueNovemberTwoThousandTwentySixTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First lien loan due November two thousand twenty six two.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueNovemberTwoThousandTwentySixTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due November Two Thousand Twenty Six Two [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueNovemberTwoThousandTwentySixTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien loan ($35,000 par, due 11/2026)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfWeightedCumulativeRealizedCapitalGainsLessRealizedCapitalLossesAndUnrealizedCapitalLossesThroughMarch312014HurdleRate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of weighted cumulative realized capital gains less cumulative realized capital losses and unrealized capital losses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfWeightedCumulativeRealizedCapitalGainsLessRealizedCapitalLossesAndUnrealizedCapitalLossesThroughMarch312014HurdleRate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Percentage of Weighted Cumulative Realized Capital Gains Less Realized Capital Losses and Unrealized Capital Losses Through March 31 2014 Hurdle Rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfWeightedCumulativeRealizedCapitalGainsLessRealizedCapitalLossesAndUnrealizedCapitalLossesThroughMarch312014HurdleRate_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Percentage of weighted cumulative realized capital gains less realized capital losses and unrealized capital losses through March 31, 2014 hurdle rate.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IncreaseDecreaseInAdditionalPaidInCapital_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Increase (decrease) in additional paid in capital</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IncreaseDecreaseInAdditionalPaidInCapital_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Increase Decrease in Additional Paid in Capital</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IncreaseDecreaseInAdditionalPaidInCapital_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Increase decrease in additional paid in capital.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AmortizationOfFinancingCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Amortization of Debt Issuance Costs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AmortizationOfFinancingCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Amortization of deferred financing costs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ScheduleOfComponentsOfInterestExpenseTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Schedule of components of interest expense.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ScheduleOfComponentsOfInterestExpenseTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule Of Components Of Interest Expense [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ScheduleOfComponentsOfInterestExpenseTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Components of Interest Expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueMayTwoThousandTwentyFourTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Loan ($29,639 par, Due 5/2024)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueMayTwoThousandTwentyFourTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First-lien Loan Due May Two Thousand Twenty Four Two [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueMayTwoThousandTwentyFourTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First-lien Loan Due May Two Thousand Twenty Four Two.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Earnings per common share-basic</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Earnings (losses) per common share - basic</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Earnings Per Share, Basic, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Earnings Per Share, Basic</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_DelayedDrawMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Delayed draw.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_DelayedDrawMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Delayed Draw [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_DelayedDrawMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Delayed Draw</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_NetChangeInRealizedGainsLossesOnInvestmentsAndForeignCurrencyTranslation_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total net realized gains (losses)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_NetChangeInRealizedGainsLossesOnInvestmentsAndForeignCurrencyTranslation_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net realized gains on investments and foreign currency transactions</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_NetChangeInRealizedGainsLossesOnInvestmentsAndForeignCurrencyTranslation_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Net Change In Realized Gains Losses On Investments And Foreign Currency Translation</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_NetChangeInRealizedGainsLossesOnInvestmentsAndForeignCurrencyTranslation_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Net change in realized gains (losses) on investments and foreign currency translation.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_EquityOfferingExpensesPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Equity offering expenses.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_EquityOfferingExpensesPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Equity Offering Expenses [Policy Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_EquityOfferingExpensesPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Equity Offering Expenses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingExpensesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Operating Expenses [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingExpensesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Expenses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_OtherPayablesToAffiliate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other payables to affiliate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_OtherPayablesToAffiliate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Payables To Affiliate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_OtherPayablesToAffiliate_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Other payables to affiliate.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueSeptemberTwoThousandTwentyFiveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Loan due 9/2025</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueSeptemberTwoThousandTwentyFiveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due September Two Thousand Twenty Five [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueSeptemberTwoThousandTwentyFiveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First lien loan due september two thousand twenty five.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Other Liabilities, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AblFiloTermLoanDueSeptemberTwoThousandTwentyTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">ABL FILO term loan due 9/2022</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AblFiloTermLoanDueSeptemberTwoThousandTwentyTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">ABL FILO Term Loan Due September Two Thousand Twenty Two [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AblFiloTermLoanDueSeptemberTwoThousandTwentyTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">ABL FILO term loan due september two thousand twenty two.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investments, Debt and Equity Securities [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanOneDueDecemberTwoThousandTwentyFiveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Loan due 12/2025</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanOneDueDecemberTwoThousandTwentyFiveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan One Due December Two Thousand Twenty Five [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanOneDueDecemberTwoThousandTwentyFiveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First Lien Loan One Due December Two Thousand Twenty Five.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative Instruments and Hedging Activities Disclosure [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Derivatives</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SpecifiedRelevantRateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Specified relevant rate.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SpecifiedRelevantRateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Specified Relevant Rate [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SpecifiedRelevantRateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Specified Relevant Rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PingIdentityHoldingCorporationMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Ping identity holding corporation.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PingIdentityHoldingCorporationMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Ping Identity Holding Corporation [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PingIdentityHoldingCorporationMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Ping Identity Holding Corp.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCreditFacilityAverageOutstandingAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Line of Credit Facility, Average Outstanding Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCreditFacilityAverageOutstandingAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Average debt outstanding (in millions)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ConvertibleNoteMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Convertible note.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ConvertibleNoteMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Convertible Note [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ConvertibleNoteMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Convertible Note</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestRateDerivativesAtFairValueNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Rate Derivatives, at Fair Value, Net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestRateDerivativesAtFairValueNet_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Interest Rate Derivatives, at Fair Value, Net, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestRateDerivativesAtFairValueNet_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Market Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongTermDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Carrying Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongTermDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Carrying value of debt</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongTermDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Outstanding debt</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongTermDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt (net of deferred financing costs of $28,306 and $8,153, respectively)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_RisksRelatedToOurSecuritiesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Risks Related to Our Securities.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_RisksRelatedToOurSecuritiesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Risks Related to Our Securities [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UnrealizedGainLossOnDerivatives_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Unrealized gains (losses) on derivatives</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UnrealizedGainLossOnDerivatives_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Net change in unrealized (gains) losses on interest rate swaps</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UnrealizedGainLossOnDerivatives_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Unrealized Gain (Loss) on Derivatives</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UnrealizedGainLossOnDerivatives_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest rate swaps</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentCompanyRealizedAndUnrealizedGainLossOnInvestmentAndForeignCurrencyAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Gain (Loss), Investment and Derivative, Operating, and Foreign Currency Transaction, before Tax [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentCompanyRealizedAndUnrealizedGainLossOnInvestmentAndForeignCurrencyAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Unrealized and Realized Gains (Losses)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RetainedEarningsAccumulatedDeficit_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total distributable earnings - book basis</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RetainedEarningsAccumulatedDeficit_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Retained Earnings (Accumulated Deficit)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RetainedEarningsAccumulatedDeficit_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Distributable earnings</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AffiliatedMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Affiliated</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AffiliatedMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Affiliated [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AffiliatedMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Affiliated.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueAprilTwoThousandTwentySixOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First lien loan due April two thousand twenty six one.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueAprilTwoThousandTwentySixOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due April Two Thousand Twenty Six One [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueAprilTwoThousandTwentySixOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien loan($17,018par,due4/2026)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_NortheastMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Northeast.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_NortheastMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Northeast [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_NortheastMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">United States - Northeast</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_DiscoParentIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Disco Parent, Inc.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_DiscoParentIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Disco Parent Inc [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_DiscoParentIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Disco parent Inc.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="country_US_lbl" xlink:role="http://www.xbrl.org/2003/role/label">UNITED STATES</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="country_US_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">United States</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPaidInKindInterest_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Fair value measurement with unobservable inputs reconciliation recurring basis asset paid-in-kind interest.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPaidInKindInterest_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Paid In Kind Interest</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPaidInKindInterest_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Paid-in-kind interest</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="country_FR_lbl" xlink:role="http://www.xbrl.org/2003/role/label">FRANCE</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="country_FR_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">France</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentTypeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment Type [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentTypeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Investment Type</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_BusinessServicesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Business services.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_BusinessServicesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Services [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_BusinessServicesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Business Services</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_WithManagementFeeWaiverMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">With Management Fee Waiver [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_WithManagementFeeWaiverMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">With management fee waiver.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_WithManagementFeeWaiverMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">With Management Fee Waiver [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueSeptemberTwoThousandTwentyTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Loan due 9/2022</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueSeptemberTwoThousandTwentyTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due September Two Thousand Twenty Two [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueSeptemberTwoThousandTwentyTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First lien loan due september two thousand twenty two.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivities_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net Cash Provided by (Used in) Operating Activities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Net Cash Provided by (Used in) Operating Activities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_LineOfCreditFacilityMaximumBorrowingCapacityUnderCertainCircumstances_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Line of credit facility maximum borrowing capacity under certain circumstances.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_LineOfCreditFacilityMaximumBorrowingCapacityUnderCertainCircumstances_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Line of Credit Facility Maximum Borrowing Capacity Under Certain Circumstances</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_LineOfCreditFacilityMaximumBorrowingCapacityUnderCertainCircumstances_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Line of credit facility maximum borrowing capacity under certain circumstances</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_UsaDebuskLlcMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">USA Debusk LLC [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_UsaDebuskLlcMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">USA Debusk LLC.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_UsaDebuskLlcMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">USA Debusk, LLC</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="cyd_MaterialCybersecurityIncidentTimingTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Material Cybersecurity Incident Timing [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeFairValueOfDerivativeNet_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Derivative, fair value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeFairValueOfDerivativeNet_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Derivative, Fair Value, Net, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeFairValueOfDerivativeNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative, Fair Value, Net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeFairValueOfDerivativeNet_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Total derivatives</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Instrument [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsForProceedsFromHedgeInvestingActivities_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedTotalLabel">Net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsForProceedsFromHedgeInvestingActivities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Payments for (Proceeds from) Hedge, Investing Activities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsForProceedsFromHedgeInvestingActivities_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancialServicesSectorMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financial Services Sector [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancialServicesSectorMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Financial Services</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLossCarryforwards_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Operating loss carry forward generating tax refund</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLossCarryforwards_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Operating Loss Carryforwards</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment, Policy [Policy Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Investments at Fair Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Net Cash Provided by (Used in) Operating Activities [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cash Flows from Operating Activities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_BanyanSoftwareHoldingLlcMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Banyan Software Holdings, LLC</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_BanyanSoftwareHoldingLlcMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Banyan Software Holding, LLC [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_BanyanSoftwareHoldingLlcMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Banyan software holding, llc.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SMATechnologiesHoldingsLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">S M A Technologies Holdings L L C.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SMATechnologiesHoldingsLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">S M A Technologies Holdings L L C [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SMATechnologiesHoldingsLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">SMA Technologies Holdings, LLC</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NondesignatedMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Not Designated As Hedging Instrument</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NondesignatedMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Not Designated as Hedging Instrument [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NondesignatedMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">No Longer Designated As Instruments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value Measurements of Investments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueMayTwoThousandTwentySevenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Loan due 5/2027</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueMayTwoThousandTwentySevenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First-lien Loan Due May Two Thousand Twenty Seven.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueMayTwoThousandTwentySevenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due May Two Thousand Twenty Seven [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockParOrStatedValuePerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common shares, par value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockParOrStatedValuePerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Number of common stock par share</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockParOrStatedValuePerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Common stock, price per share</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_TruckLiteCoLlcMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Truck-Lite Co.,LLC [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_TruckLiteCoLlcMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Truck-Lite Co.,LLC</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_TruckLiteCoLlcMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Truck-Lite Co., LLC</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="cyd_CybersecurityRiskManagementPositionsOrCommitteesResponsibleTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cybersecurity Risk Management Positions or Committees Responsible [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="cyd_MaterialCybersecurityIncidentMaterialImpactOrReasonablyLikelyMaterialImpactTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Material Cybersecurity Incident Material Impact or Reasonably Likely Material Impact [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InsuranceMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Insurance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InsuranceMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Insurance [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InsuranceMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Insurance.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MeasurementInputTypeDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Measurement Input Type [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MeasurementInputTypeDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Measurement Input Type</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementOfCashFlowsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Statement of Cash Flows [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_EventusBuyerLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Eventus Buyer, LLC</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_EventusBuyerLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Eventus Buyer, LLC [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_EventusBuyerLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Eventus Buyer, LLC.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ScheduleOfComponentOfCarryingValueOfConvertibleNotesAndInterestRateTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Component of Carrying Value of Convertible Notes and Interest Rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ScheduleOfComponentOfCarryingValueOfConvertibleNotesAndInterestRateTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Schedule of component of carrying value of convertible notes and interest rate.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ScheduleOfComponentOfCarryingValueOfConvertibleNotesAndInterestRateTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule Of Component Of Carrying Value Of Convertible Notes and Interest Rate [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueAugustTwoThousandTwentyFiveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Loan due 8/2025</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueAugustTwoThousandTwentyFiveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First-lien loan Due August Two Thousand Twenty Five.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueAugustTwoThousandTwentyFiveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due August Two Thousand Twenty Five [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="cyd_MaterialCybersecurityIncidentAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Material Cybersecurity Incident [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeGainLossOnDerivativeNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative, Gain (Loss) on Derivative, Net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeGainLossOnDerivativeNet_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Derivative, Gain (Loss) on Derivative, Net, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeGainLossOnDerivativeNet_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Change in Unrealized Gains / (Losses)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SapphireSoftwareBuyerIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Sapphire Software Buyer Inc [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SapphireSoftwareBuyerIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Sapphire software buyer inc.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SapphireSoftwareBuyerIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Sapphire Software Buyer, Inc</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementEquityComponentsAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Equity Components [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementEquityComponentsAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Equity Components</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueJanuaryTwoThousandTwentyFiveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Loan due 1/2025</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueJanuaryTwoThousandTwentyFiveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due January Two Thousand Twenty Five [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueJanuaryTwoThousandTwentyFiveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First lien loan due january two thousand twenty five.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityAddressAddressLine1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Address, Address Line One</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ClassBUnitsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Class B units.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ClassBUnitsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Class B Units [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ClassBUnitsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Class B Units</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Computation of Basic and Diluted Earnings Per Common Share</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Related Party Transaction [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule Of Related Party Transactions By Related Party [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="cyd_CybersecurityRiskProcessForInformingBoardCommitteeOrSubcommitteeResponsibleForOversightTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cybersecurity Risk Process for Informing Board Committee or Subcommittee Responsible for Oversight [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueDecemberTwoThousandTwentyFiveOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First-lien Loan Due December Two Thousand Twenty Five One.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueDecemberTwoThousandTwentyFiveOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due December Two Thousand Twenty Five One [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueDecemberTwoThousandTwentyFiveOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Loan (GBP 4,723 par, Due 12/2025)</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_HedgingDesignationDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Hedging Designation</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_JulyTwoThousandThirtyNotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">July Two Thousand Thirty Notes [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_JulyTwoThousandThirtyNotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">July two thousand thirty notes.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_JulyTwoThousandThirtyNotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">July 2030 Notes</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ValuationTechniqueAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Valuation Approach and Technique</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfPreIncentiveFeeNetInvestmentIncomeHurdleRateQuarterly_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of hurdle rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfPreIncentiveFeeNetInvestmentIncomeHurdleRateQuarterly_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Percentage Of Pre Incentive Fee Net Investment Income Hurdle Rate Quarterly</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfPreIncentiveFeeNetInvestmentIncomeHurdleRateQuarterly_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Percentage of pre incentive fee net investment income hurdle rate quarterly.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RatioOfIndebtednessToNetCapital1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Ratio of Indebtedness to Net Capital</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RatioOfIndebtednessToNetCapital1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Asset coverage ratio</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NonoperatingIncomeExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total Investment Income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ConvertibleNotesDueJuneTwoThousandTwentySevenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Convertible Note (AUD 3,000 Par, Due 6/2027)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ConvertibleNotesDueJuneTwoThousandTwentySevenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Convertible Notes Due June Two Thousand Twenty Seven [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ConvertibleNotesDueJuneTwoThousandTwentySevenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Convertible Notes Due June Two Thousand Twenty Seven.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Line of credit facility maximum borrowing capacity</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Line of Credit Facility, Maximum Borrowing Capacity</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeApproachValuationTechniqueMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Valuation, Income Approach [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeApproachValuationTechniqueMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Income Approach</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_HotelGamingAndLeisureMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Hotel, Gaming and Leisure.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_HotelGamingAndLeisureMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Hotel Gaming And Leisure [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_HotelGamingAndLeisureMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Hotel, Gaming and Leisure</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueJanuaryTwoThousandTwentyFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Loan due 1/2024</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueJanuaryTwoThousandTwentyFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First-lien Loan Due January Two Thousand Twenty Four.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueJanuaryTwoThousandTwentyFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due January Two Thousand Twenty Four [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TradingSecuritiesDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt investments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TradingSecuritiesDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Trading Securities Debt, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TradingSecuritiesDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Trading</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ScheduleOfCommitmentsToFundInvestmentsInCurrentPortfolioCompaniesTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Schedule of commitments to fund investments in current portfolio companies.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ScheduleOfCommitmentsToFundInvestmentsInCurrentPortfolioCompaniesTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule Of Commitments To Fund Investments In Current Portfolio Companies [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ScheduleOfCommitmentsToFundInvestmentsInCurrentPortfolioCompaniesTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Commitments To Fund Investments In Current Portfolio Companies</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueAugustTwoThousandTwentySixMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Loan due 8/2026</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueAugustTwoThousandTwentySixMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First-lien Loan Due August Two Thousand Twenty Six.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueAugustTwoThousandTwentySixMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due August Two Thousand Twenty Six [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SubscriptionAgreementsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Subscription Agreements</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SubscriptionAgreementsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Subscription Agreements [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SubscriptionAgreementsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Subscription Agreements.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfPreIncentiveFeeNetInvestmentIncomeQuarterlyAfterCatchUpAchieved_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Percentage of excess pre-incentive fee net investment income, quarterly after catch-up achieved.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfPreIncentiveFeeNetInvestmentIncomeQuarterlyAfterCatchUpAchieved_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Percentage Of Pre Incentive Fee Net Investment Income Quarterly After Catch Up Achieved</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfPreIncentiveFeeNetInvestmentIncomeQuarterlyAfterCatchUpAchieved_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of excess pre-Incentive Fee net investment income quarterly</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InterestRateSwapOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Interest rate swap one.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InterestRateSwapOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Rate Swap One [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InterestRateSwapOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest Rate Swap One</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_AmendmentFlag_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Amendment Flag</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueNovemberTwoThousandTwentyNineMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First Lien Loan Due November Two Thousand Twenty Nine.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueNovemberTwoThousandTwentyNineMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due November Two Thousand Twenty Nine Member</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueNovemberTwoThousandTwentyNineMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Loan due 11/2029</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromHedgeInvestingActivities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Proceeds from Hedge, Investing Activities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromHedgeInvestingActivities_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Received</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IncentiveFeesOnNetCapitalGainsLosses_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Incentive fees on net capital gains (losses)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IncentiveFeesOnNetCapitalGainsLosses_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Incentive fees on net capital gains (losses).</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IncentiveFeesOnNetCapitalGainsLosses_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Incentive fees on net capital gains (losses)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_GreenshootBidcoBVMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Greenshoot Bidco B V [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_GreenshootBidcoBVMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Greenshoot Bidco B. V.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_GreenshootBidcoBVMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Greenshoot Bidco B.V.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NotesPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Notes Payable, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NotesPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Notes Payable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NotesPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Outstanding Principal</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DomesticCountryMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Domestic Tax Jurisdiction [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DomesticCountryMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">U.S. Federal Tax</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SummaryOfTaxBasisComponentsOfDistributableEarningsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Summary Of Tax Basis Components Of Distributable Earnings [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SummaryOfTaxBasisComponentsOfDistributableEarningsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Summary of tax basis components of distributable earnings.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SummaryOfTaxBasisComponentsOfDistributableEarningsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Tax Basis Components of Distributable Earnings</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ArrowheadPharmaceuticalsIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Arrowhead Pharmaceuticals Inc [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ArrowheadPharmaceuticalsIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Arrowhead pharmaceuticals inc.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ArrowheadPharmaceuticalsIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Arrowhead Pharmaceuticals, Inc.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentNameDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument, Name [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentNameDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Instrument, Name</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdditionalPaidInCapitalCommonStock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Additional paid-in capital</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AdjustmentsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Adjustments:</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AdjustmentsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Adjustments.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AdjustmentsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Adjustments [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienRevolvingLoanMayTwoThousandTwentyFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien revolving loan ($2,400 par, due 5/2024)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienRevolvingLoanMayTwoThousandTwentyFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Revolving Loan May Two Thousand Twenty Four [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienRevolvingLoanMayTwoThousandTwentyFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First lien revolving loan may two thousand twenty four.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AblFiloTermLoanDueAugustTwoThousandTwentySevenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">A B L F I L O Term Loan Due August Two Thousand Twenty Seven.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AblFiloTermLoanDueAugustTwoThousandTwentySevenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">ABL FILO Term Loan Due August Two Thousand Twenty Seven [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AblFiloTermLoanDueAugustTwoThousandTwentySevenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">ABL FILO Term due 8/2027</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ConvertibleNoteDueMayTwoThousandTwentyFiveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Convertible Note due 5/2025</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ConvertibleNoteDueMayTwoThousandTwentyFiveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Convertible Note Due May Two Thousand Twenty Five [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ConvertibleNoteDueMayTwoThousandTwentyFiveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Convertible Note Due May Two Thousand Twenty Five.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetIncomeLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Increase (decrease) in net assets resulting from operations</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetIncomeLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Increase (Decrease) in Net Assets Resulting from Operations</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SecondLienLoanDueJuneTwoThousandTwentyFiveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Second-lien loan due 6/2025</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SecondLienLoanDueJuneTwoThousandTwentyFiveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Second Lien Loan Due June Two Thousand Twenty Five [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SecondLienLoanDueJuneTwoThousandTwentyFiveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Second Lien Loan Due June Two Thousand Twenty Five.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InterestRateSwapThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Interest rate swap three.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InterestRateSwapThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Rate Swap Three [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InterestRateSwapThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest Rate Swap Three</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_VariableRateDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Variable Rate [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_VariableRateDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Variable Rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_StructuredProductDueAprilTwoThousandThirtyOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Structured product due April two thousand thirty one.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_StructuredProductDueAprilTwoThousandThirtyOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Structured Product Due April Two Thousand Thirty One [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_StructuredProductDueAprilTwoThousandThirtyOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Structured Product Due April Two Thousand Thirty One</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestExpenseMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Expense [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestExpenseMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest Expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfDebtTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Debt [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfDebtTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Debt Obligations</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueMarchTwoThousandTwentySixMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First-lien loan Due March Two Thousand Twenty Six.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueMarchTwoThousandTwentySixMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due March Two Thousand Twenty Six [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueMarchTwoThousandTwentySixMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Loan ($40,660 par, Due 3/2026)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InterestRateSwaps_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Interest rate swaps</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InterestRateSwaps_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Interest rate swaps.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InterestRateSwaps_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Rate Swaps</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InterestRateSwaps_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest rate swaps</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_HealthcareSectorMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Healthcare Sector [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_HealthcareSectorMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Healthcare</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EquityComponentDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Equity Component [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EquityComponentDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Equity Component</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_RangeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Statistical Measurement [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_RangeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Statistical Measurement</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentInterestRate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment Interest Rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentInterestRate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest Rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestExpenseDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Expense, Debt</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestExpenseDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestExpenseDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total Interest Expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_QSRAcquisitionCoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">QSR Acquisition Co</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_QSRAcquisitionCoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">QSR Acquisition Co. [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_QSRAcquisitionCoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">QSR Acquisition Co.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="cyd_CybersecurityRiskMateriallyAffectedOrReasonablyLikelyToMateriallyAffectRegistrantTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cybersecurity Risk Materially Affected or Reasonably Likely to Materially Affect Registrant [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_CirrusBidcoLtdMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cirrus (BidCo) Limited</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_CirrusBidcoLtdMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cirrus Bidco Ltd [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_CirrusBidcoLtdMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Cirrus Bidco ltd .</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ScorpioBidcoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Scorpio Bidco</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ScorpioBidcoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Scorpio Bidco [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ScorpioBidcoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Scorpio Bidco.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="cyd_CybersecurityRiskManagementProcessesIntegratedFlag_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cybersecurity Risk Management Processes Integrated [Flag]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueDecemberTwoThousandTwentyTwoThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Loan Due 12/2022</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueDecemberTwoThousandTwentyTwoThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First-Lien Loan Due December Two Thousand Twenty-Two Three [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueDecemberTwoThousandTwentyTwoThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First-Lien Loan Due 12/2022.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProfitLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Increase (Decrease) in net assets resulting from operations</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProfitLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net Income (Loss), Including Portion Attributable to Noncontrolling Interest, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProfitLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Net Income (Loss), Including Portion Attributable to Noncontrolling Interest</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="cyd_MaterialCybersecurityIncidentScopeTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Material Cybersecurity Incident Scope [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockSharesIssued_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Preferred Stock, Shares Issued</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockSharesIssued_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Preferred stock, shares issued</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienRevolvingLoanDueAugustTwoThousandTwentyThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien revolving loan due 8/2023</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienRevolvingLoanDueAugustTwoThousandTwentyThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Revolving Loan Due August Two Thousand Twenty Three [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienRevolvingLoanDueAugustTwoThousandTwentyThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First Lien Revolving Loan Due August Two Thousand Twenty Three.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ClassAUnitsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Class A units.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ClassAUnitsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Class A Units [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ClassAUnitsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Class A Units</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_TaxReclassificationOfStockholdersEquity_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Tax reclassification of stockholders' equity in accordance with GAAP</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_TaxReclassificationOfStockholdersEquity_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Tax reclassification of stockholders' equity.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_TaxReclassificationOfStockholdersEquity_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Tax Reclassification Of Stockholders Equity</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfDerivativeInstrumentsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Derivative Instruments [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfDerivativeInstrumentsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Amounts Paid and Received on Interest Rate Swap Transactions, Excluding Upfront Fees</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueMayTwoThousandTwentySixMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Loan ($31,580 par, Due 5/2026)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueMayTwoThousandTwentySixMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First-lien Loan Due May Two Thousand Twenty Six.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueMayTwoThousandTwentySixMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due May Two Thousand Twenty Six [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_MeasurementInputTransactionValueMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Measurement input transaction value.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_MeasurementInputTransactionValueMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Measurement Input Transaction Value [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_MeasurementInputTransactionValueMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Transaction value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeAmountOfHedgedItem_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative, Amount of Hedged Item</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeAmountOfHedgedItem_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Derivative Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueDecemberTwoThousandTwentySixMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Loan due 12/2026</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueDecemberTwoThousandTwentySixMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First-lien Loan Due December Two Thousand Twenty Six.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueDecemberTwoThousandTwentySixMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due December Two Thousand Twenty Six [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueSeptemberTwoThousandTwentyThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Loan due 9/2023</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueSeptemberTwoThousandTwentyThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First-lien Loan Due September Two Thousand Twenty Three.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueSeptemberTwoThousandTwentyThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due September Two Thousand Twenty Three [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SouthMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">South.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SouthMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">South [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SouthMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">United States - South</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TaxCreditCarryforwardTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Tax Credit Carryforward [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SeverinAcquisitionLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Severin Acquisition, LLC</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SeverinAcquisitionLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Severin Acquisition, LLC [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SeverinAcquisitionLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Severin Acquisition, LLC.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetAssetValuePerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Net Asset Value, End of Period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetAssetValuePerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Net asset value, beginning of period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetAssetValuePerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Net Asset Value per Share as of the End of the Quarter</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetAssetValuePerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net Asset Value Per Share</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_MeritSoftwareFinanceHoldingsLlcMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Merit Software Finance Holdings, LLC [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_MeritSoftwareFinanceHoldingsLlcMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Merit Software Finance Holdings, LLC.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_MeritSoftwareFinanceHoldingsLlcMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Merit Software Finance Holdings, LLC</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfNonQualifyingAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Percentage of non-qualifying assets.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfNonQualifyingAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Percentage Of Non Qualifying Assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfNonQualifyingAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of non-qualifying assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EquitySecuritiesByIndustryAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Industry Sector [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EquitySecuritiesByIndustryAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Industry Sector</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TypeOfArrangementAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Collaborative Arrangement and Arrangement Other than Collaborative [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ClassOfStockDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Class of Stock [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ClassOfStockDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Class of Stock</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FairValueOfSecuritiesAsPercentageOfNetAssetsInPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair value of securities as percentage of net assets in percentage</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FairValueOfSecuritiesAsPercentageOfNetAssetsInPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Of Securities As Percentage Of Net Assets In Percentage</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FairValueOfSecuritiesAsPercentageOfNetAssetsInPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Fair value of securities as percentage of net assets in percentage</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueDecemberTwoThousandTwentySixTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Loan ($27,000 par, Due 12/2026)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueDecemberTwoThousandTwentySixTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First-lien Loan Due December Two Thousand Twenty Six Two.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueDecemberTwoThousandTwentySixTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due December Two Thousand Twenty Six Two [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfOrganizationAndOfferingExpenses_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Percentage of organization and offering expenses.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfOrganizationAndOfferingExpenses_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Percentage of Organization and Offering Expenses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfOrganizationAndOfferingExpenses_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of organization and offering expenses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueJanuaryTwoThousandTwentyOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien loan ($17,781 par, due 1/2021)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueJanuaryTwoThousandTwentyOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First-Lien Loan Due January Two Thousand Twenty One [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueJanuaryTwoThousandTwentyOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First-Lien Loan Due January 2021.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_TwoThousandTwentyFourNotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Two thousand twenty four notes.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_TwoThousandTwentyFourNotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Two Thousand Twenty Four Notes [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_TwoThousandTwentyFourNotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2024 Notes</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Common Stock, Shares, Outstanding, Ending Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Common Stock, Shares, Outstanding, Beginning Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock, Shares, Outstanding</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common shares, outstanding</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Common shares outstanding, end of period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_RetailAndConsumerProductsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Retail and Consumer Products.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_RetailAndConsumerProductsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Retail And Consumer Products [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_RetailAndConsumerProductsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Retail and Consumer Products</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DividendsPayableTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Dividends Payable [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueDecemberTwoThousandTwentyTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First-lien Loan Due December Two Thousand Twenty Two.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueDecemberTwoThousandTwentyTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due December Two Thousand Twenty Two [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueDecemberTwoThousandTwentyTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Loan ($1,500 par, Due 12/2022)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_OtherExpenseNotCurrentlyDeductible_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Expense Not Currently Deductible</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_OtherExpenseNotCurrentlyDeductible_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Other expense not currently deductible.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_OtherExpenseNotCurrentlyDeductible_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other expenses not currently deductible</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DividendIncomeOperating_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Dividend Income, Operating</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DividendIncomeOperating_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Dividend Income, Operating, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DividendIncomeOperating_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Dividend income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockParOrStatedValuePerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Preferred Stock, Par or Stated Value Per Share</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockParOrStatedValuePerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Preferred stock, par value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueNovemberTwoThousandTwentyEightMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First Lien Loan Due November Two Thousand Twenty Eight.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueNovemberTwoThousandTwentyEightMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due November Two Thousand Twenty Eight [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueNovemberTwoThousandTwentyEightMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Loan due 11/2028</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentCompanyFinancialHighlightsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment Company, Financial Highlights [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EurodollarMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Eurodollar [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EurodollarMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Eurocurrency Rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_WeightedAverageMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Weighted Average [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_WeightedAverageMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted Average</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueAugustTwoThousandTwentyTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Loan due 8/2022</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueAugustTwoThousandTwentyTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First-lien Loan Due August Two Thousand Twenty Two.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueAugustTwoThousandTwentyTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due August Two Thousand Twenty Two [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FairValueOfSecuritiesAsPercentageOfNetAssetsAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair value of securities as percentage of net assets amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FairValueOfSecuritiesAsPercentageOfNetAssetsAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Of Securities As Percentage Of Net Assets Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FairValueOfSecuritiesAsPercentageOfNetAssetsAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Fair value of securities as percentage of net assets amount.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="cyd_CybersecurityRiskProcessForInformingManagementOrCommitteesResponsibleTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cybersecurity Risk Process for Informing Management or Committees Responsible [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_OrganizationAndOfferingExpenses_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Organization and offering expenses.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_OrganizationAndOfferingExpenses_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Organization and Offering Expenses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_OrganizationAndOfferingExpenses_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Organization and offering expenses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestIncomeOperatingPaidInKind_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Paid-in-kind interest</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestIncomeOperatingPaidInKind_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Income, Operating, Paid in Kind</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Cash_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cash</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Cash_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cash</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfManagementFeeInExcessOfAnnualRateOnGrossAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Percentage of management fee in excess of annual rate on gross assets.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfManagementFeeInExcessOfAnnualRateOnGrossAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Percentage Of Management Fee In Excess Of Annual Rate On Gross Assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfManagementFeeInExcessOfAnnualRateOnGrossAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of management fee in excess of annual rate on gross assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_NetUnrealizedGainsLossesOnInvestments_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Net Unrealized Gains (Losses) on Investments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_NetUnrealizedGainsLossesOnInvestments_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Net unrealized gains (losses) on investments.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_NetUnrealizedGainsLossesOnInvestments_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net unrealized gains (losses) on investments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeFairValueHedgeIncludedInEffectivenessGainLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Adjustment in carrying value result from hedge accounting</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeFairValueHedgeIncludedInEffectivenessGainLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Gain (loss) on fair value effective hedge</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeFairValueHedgeIncludedInEffectivenessGainLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative, Fair Value Hedge, Included in Effectiveness, Gain (Loss)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_BabylonFincoLimitedMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Babylon Finco Limited [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_BabylonFincoLimitedMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Babylon finco limited</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_BabylonFincoLimitedMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Babylon Finco Limited</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityInteractiveDataCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Interactive Data Current</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueSeptemberTwoThousandTwentySixMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Loan due 9/2026</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueSeptemberTwoThousandTwentySixMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First-lien loan Due September Two Thousand Twenty Six.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueSeptemberTwoThousandTwentySixMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due September Two Thousand Twenty Six [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_DerivativeNotionalAmountHeldDuringPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Notional Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_DerivativeNotionalAmountHeldDuringPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative Notional Amount Held during Period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_DerivativeNotionalAmountHeldDuringPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Derivative notional amount held during period.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueOctoberTwoThousandTwentyFiveTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Loan ($19,750 par, Due 10/2025)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueOctoberTwoThousandTwentyFiveTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First-lien Loan Due October Two Thousand Twenty Five Two.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueOctoberTwoThousandTwentyFiveTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due October Two Thousand Twenty Five Two [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_TwoThousandTwentyTwoConvertibleNotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Two thousand twenty two convertible notes member.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_TwoThousandTwentyTwoConvertibleNotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Two Thousand Twenty Two Convertible Notes [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_TwoThousandTwentyTwoConvertibleNotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2022 Convertible Notes</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IncentiveFeesAccruedRelatedToExpenseReversalCapitalGainsFees_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Incentive fees accrued related to expense (reversal) capital gains fees.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IncentiveFeesAccruedRelatedToExpenseReversalCapitalGainsFees_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Incentive Fees Accrued Related To Expense (Reversal) Capital Gains Fees</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IncentiveFeesAccruedRelatedToExpenseReversalCapitalGainsFees_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Incentive fees accrued related to expense (reversal) of capital gains fees</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Derivative [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_OtherTemporaryDifferences_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Other temporary differences.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_OtherTemporaryDifferences_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Temporary Differences</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_OtherTemporaryDifferences_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other temporary differences</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_OtherTemporaryDifferences_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Other temporary differences</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_ConsolidatedEntitiesAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Consolidated Entities [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_ConsolidatedEntitiesAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Consolidated Entities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RelatedPartyTransactionDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Related Party Transaction [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RelatedPartyTransactionDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Related Party Transaction</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RelatedPartyTransactionsDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Related Party Transactions Disclosure [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RelatedPartyTransactionsDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Agreements and Related Party Transactions</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtRelatedCommitmentFeesAndDebtIssuanceCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Related Commitment Fees and Debt Issuance Costs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtRelatedCommitmentFeesAndDebtIssuanceCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Commitment fees</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_RangeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Statistical Measurement [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_RangeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Statistical Measurement</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfDividendsPayableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Dividends Payable [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfDividendsPayableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Dividends Declared</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InternetServicesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Internet Services.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InternetServicesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Internet Services [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InternetServicesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Internet Services</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RelatedPartyDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Related and Nonrelated Parties [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RelatedPartyDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Related Party</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AlternativeBaseRateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Alternative base rate.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AlternativeBaseRateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Alternative Base Rate [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AlternativeBaseRateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Alternative Base Rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_TaxableIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Taxable Income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_TaxableIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Taxable Income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_TaxableIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Taxable income.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentCompanyFinancialHighlightsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment Company, Financial Highlights [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentCompanyFinancialHighlightsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Financial Highlights</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoansDueDecemberTwoThousandTwentyFiveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First Lien Loans Due December Two Thousand Twenty Five.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoansDueDecemberTwoThousandTwentyFiveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loans Due December Two Thousand Twenty Five [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoansDueDecemberTwoThousandTwentyFiveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien loan ($42,000 par, due 12/2025)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Balance, End of Period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Balance, beginning of period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InterestRateSwapSixMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Interest rate swap six.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InterestRateSwapSixMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Rate Swap Six [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InterestRateSwapSixMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest Rate Swap Six</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Derivative [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_O2023Q1DividendsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">O 2023 Q1 Dividends.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_O2023Q1DividendsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">O 2023 Q1 Dividends [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_O2023Q1DividendsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">O2023 Q1 Dividends [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueAprilTwoThousandTwentySixMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Loan ($17,018 par,Due 4/2026)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueAprilTwoThousandTwentySixMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First-lien Loan Due April Two Thousand Twenty Six.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueAprilTwoThousandTwentySixMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due April Two Thousand Twenty Six [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredTaxAssetsLiabilitiesNet_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Deferred tax liability offset by deferred tax asset pertaining to operating losses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredTaxAssetsLiabilitiesNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Deferred Tax Assets, Net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredTaxAssetsLiabilitiesNet_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Deferred Tax Assets, Net, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_OwnershipDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Ownership [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeStatementLocationAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Statement of Income Location, Balance [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeStatementLocationAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Income Statement Location</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentOwnedBalanceShares_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Investment, shares</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentOwnedBalanceShares_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment Owned, Balance, Shares</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Assets_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Assets_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total Assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OrganizationConsolidationBasisOfPresentationBusinessDescriptionAndAccountingPoliciesTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Organization, Consolidation, Basis of Presentation, Business Description and Accounting Policies [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OrganizationConsolidationBasisOfPresentationBusinessDescriptionAndAccountingPoliciesTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Organization and Basis of Presentation</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FullsteamOperationsLlcMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fullsteam Operations LLC</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FullsteamOperationsLlcMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fullsteam Operations LLC [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FullsteamOperationsLlcMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Fullsteam Operations LLC.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SecondLienLoanDueOctoberTwoThousandTwentyNineOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Second lien loan due October two thousand twenty nine one.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SecondLienLoanDueOctoberTwoThousandTwentyNineOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Second Lien Loan Due October Two Thousand Twenty Nine One [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SecondLienLoanDueOctoberTwoThousandTwentyNineOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Second-lien loan($43,490par,due10/2029)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IncentiveFeesOnNetInvestmentIncomePayableToAffiliate_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Incentive fees on net investment income payable to affiliate.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IncentiveFeesOnNetInvestmentIncomePayableToAffiliate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Incentive Fees On Net Investment Income Payable To Affiliate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IncentiveFeesOnNetInvestmentIncomePayableToAffiliate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Incentive fees on net investment income payable to affiliate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Long-Term Debt Instruments [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Instrument [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DividendsPayableCurrentAndNoncurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Dividends payable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DividendsPayableCurrentAndNoncurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Dividends Payable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_UndistributedNetInvestmentIncomeTaxBasis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Undistributed net investment income - tax basis</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_UndistributedNetInvestmentIncomeTaxBasis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Undistributed Net Investment Income - Tax Basis</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_UndistributedNetInvestmentIncomeTaxBasis_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Undistributed net investment income - tax basis.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">New Accounting Pronouncements, Policy [Policy Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Recent Accounting Standards and Regulatory Updates</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityAddressCityOrTown_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Address, City or Town</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EquityAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Equity [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfPreIncentiveFeeNetInvestmentIncomePayableQuarterlySubsequentToExchangeListing_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Percentage of pre-incentive fee net investment income payable quarterly subsequent to exchange listing.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfPreIncentiveFeeNetInvestmentIncomePayableQuarterlySubsequentToExchangeListing_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Percentage Of Pre Incentive Fee Net Investment Income Payable Quarterly Subsequent to Exchange Listing</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfPreIncentiveFeeNetInvestmentIncomePayableQuarterlySubsequentToExchangeListing_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of pre-incentive fee net investment income payable quarterly subsequent to exchange listing</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_BswiftLlcMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Bswift LLC.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_BswiftLlcMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Bswift LLC [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_BswiftLlcMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Bswift, LLC</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueJulyTwoThousandTwentyThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien loan due 7/2023</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueJulyTwoThousandTwentyThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First-lien loan due July Two Thousand Twenty Three [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueJulyTwoThousandTwentyThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First-lien loan due 7/2023.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeBasisSpreadOnVariableRate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative, Basis Spread on Variable Rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeBasisSpreadOnVariableRate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Derivative, basis spread on variable rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromUnsecuredNotesPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Proceeds from Unsecured Notes Payable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromUnsecuredNotesPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Proceeds from issuance of debt, net of underwriting discounts, offering costs and original issue discount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="country_CA_lbl" xlink:role="http://www.xbrl.org/2003/role/label">CANADA</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="country_CA_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Canada</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_NumberOfInvestments_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of investment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_NumberOfInvestments_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Number of Investments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_NumberOfInvestments_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Number of investments.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="cyd_CybersecurityRiskMateriallyAffectedOrReasonablyLikelyToMateriallyAffectRegistrantFlag_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cybersecurity Risk Materially Affected or Reasonably Likely to Materially Affect Registrant [Flag]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentIncomeInvestmentExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment Income, Investment Expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentIncomeInvestmentExpense_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Expenses excluded from net investment income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentCompanyNetAssetValuePerSharePeriodIncreaseDecrease_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment Company, Net Asset Value Per Share, Period Increase (Decrease)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentCompanyNetAssetValuePerSharePeriodIncreaseDecrease_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Total increase/(decrease) in net assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentCompanyNetAssetValuePerSharePeriodIncreaseDecrease_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total increase (decrease) in net assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DividendsAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Dividends [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_OrdinaryIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Ordinary Income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_OrdinaryIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Ordinary Income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_OrdinaryIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Ordinary income.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetPledgedAsCollateralMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Asset Pledged as Collateral [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetPledgedAsCollateralMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Asset Pledged as Collateral</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueJulyTwoThousandTwentySevenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Loan due 7/2027</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueJulyTwoThousandTwentySevenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First-lien Loan Due July Two Thousand Twenty Seven.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueJulyTwoThousandTwentySevenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due July Two Thousand Twenty Seven [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentAffiliatedIssuerNoncontrolledMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Non-controlled, Affiliated Investments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentAffiliatedIssuerNoncontrolledMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment, Affiliated Issuer, Noncontrolled [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="country_DE_lbl" xlink:role="http://www.xbrl.org/2003/role/label">GERMANY</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="country_DE_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Germany</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentFaceAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument, Face Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentFaceAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Aggregate principal amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentFaceAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Aggregate Principal Amount Committed</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_WithoutManagementFeeWaiverMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Without management fee waiver.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_WithoutManagementFeeWaiverMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Without Management Fee Waiver [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienNoteOneDueJuneTwoThousandTwentyFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien note due 6/2024</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienNoteOneDueJuneTwoThousandTwentyFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Note One Due June Two Thousand Twenty Four [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienNoteOneDueJuneTwoThousandTwentyFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First Lien Note One Due June Two Thousand Twenty Four.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ManufacturingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Manufacturing.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ManufacturingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Manufacturing [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ManufacturingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Manufacturing</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfExcessPreIncentiveFeeNetInvestmentIncomeForImmediatePrecedingCalendarQuarter_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Percentage of excess pre-incentive fee net investment income for immediate preceding calendar quarter.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfExcessPreIncentiveFeeNetInvestmentIncomeForImmediatePrecedingCalendarQuarter_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Percentage Of Excess Pre Incentive Fee Net Investment Income For Immediate Preceding Calendar Quarter</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfExcessPreIncentiveFeeNetInvestmentIncomeForImmediatePrecedingCalendarQuarter_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of excess pre-incentive fee net investment income for immediate preceding calendar quarter</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AdviserMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Adviser.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AdviserMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Adviser [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AdviserMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Adviser</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PaidInKindInterestIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Paid-in-kind interest income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PaidInKindInterestIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Paid-In-Kind Interest Income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PaidInKindInterestIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Paid-in-kind interest income.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="cyd_CybersecurityRiskThirdPartyOversightAndIdentificationProcessesFlag_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cybersecurity Risk Third Party Oversight and Identification Processes [Flag]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ConvertibleNoteDueSeptemberTwoThousandTwentyThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Convertible Note Due September Two Thousand Twenty Three.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ConvertibleNoteDueSeptemberTwoThousandTwentyThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Convertible Note Due September Two Thousand Twenty Three [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ConvertibleNoteDueSeptemberTwoThousandTwentyThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Convertible Note ($2,602 par, Due 9/2023)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueSeptemberTwoThousandTwentyEightTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First-lien Loan due September Two Thousand Twenty Eight two.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueSeptemberTwoThousandTwentyEightTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First-lien Loan Due September Two Thousand Twenty Eight Two [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueSeptemberTwoThousandTwentyEightTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Loan due 9/2028</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="cyd_CybersecurityRiskManagementPositionsOrCommitteesResponsibleReportToBoardFlag_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cybersecurity Risk Management Positions or Committees Responsible Report to Board [Flag]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueNovemberTwoThousandTwentyFiveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Loan due 11/2025</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueNovemberTwoThousandTwentyFiveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due November Two Thousand Twenty Five [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueNovemberTwoThousandTwentyFiveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First lien loan due november two thousand twenty five.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienRevolvingLoanJulyTwoThousandTwentyTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Revolving Loan due 7/2022</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienRevolvingLoanJulyTwoThousandTwentyTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Revolving Loan July Two Thousand Twenty Two [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienRevolvingLoanJulyTwoThousandTwentyTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First-lien revolving loan July two thousand twenty two.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_NonControlledNonAffiliatedInvestmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Non-controlled, non-affiliated investments.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_NonControlledNonAffiliatedInvestmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Non Controlled Non Affiliated Investments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_NonControlledNonAffiliatedInvestmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Non-controlled, Non-affiliated Investments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Asset, Recurring Basis, Still Held, Unrealized Gain (Loss)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net change in unrealized gains (losses)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ArtisanBidcoIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Artisan Bidco, Inc</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ArtisanBidcoIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Artisan Bidco, Inc [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ArtisanBidcoIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Artisan Bidco, Inc.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisGainLossIncludedInEarningsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisGainLossIncludedInEarningsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net Change in Unrealized Gains or Losses on Investments for Which Level 3 Inputs were Used in Determining Fair Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentIncreaseDecreaseForPeriodNet_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Debt Instrument, Increase (Decrease), Net, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentIncreaseDecreaseForPeriodNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument, Increase (Decrease), Net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentIncreaseDecreaseForPeriodNet_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Increase (decrease) in carrying value of notes</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AblFiloTermLoanDueDecemberTwoThousandTwentyFiveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">ABL FILO Term Loan due 12/2025</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AblFiloTermLoanDueDecemberTwoThousandTwentyFiveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">ABL FILO Term Loan Due December Two Thousand Twenty Five [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AblFiloTermLoanDueDecemberTwoThousandTwentyFiveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">ABL FILO term loan due december two thousand twenty five.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueDisclosuresAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Disclosures [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InvestmentCompanyDividendDeclaredPerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Dividends declared</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InvestmentCompanyDividendDeclaredPerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment Company Dividend Declared Per Share</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InvestmentCompanyDividendDeclaredPerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Investment company dividend declared per share.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueMayTwoThousandTwentySevenOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First lien loan due may two thousand twenty seven one.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueMayTwoThousandTwentySevenOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due May Two Thousand Twenty Seven One [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueMayTwoThousandTwentySevenOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien loan($1,542par,due5/2027)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueJuneTwoThousandTwentyThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Loan due 6/2023</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueJuneTwoThousandTwentyThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due June Two Thousand Twenty Three [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueJuneTwoThousandTwentyThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First Lien Loan Due June Two Thousand Twenty Three.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InvestmentsFairValueDisclosureNet_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InvestmentsFairValueDisclosureNet_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InvestmentsFairValueDisclosureNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investments Fair Value Disclosure Net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InvestmentsFairValueDisclosureNet_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Investments fair value disclosure net.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodValueNewIssues_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stock Issued During Period, Value, New Issues</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodValueNewIssues_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Issuance of common shares, value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredTaxAssetsNet_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Deferred tax asset offset by valuation allowance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredTaxAssetsNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Deferred Tax Assets, Net of Valuation Allowance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredTaxAssetsNet_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Deferred Tax Assets, Net of Valuation Allowance, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_OrganizationalFees_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Organizational fees.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_OrganizationalFees_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Organizational Fees</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_OrganizationalFees_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Organizational expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueDecemberTwoThousandTwentyEightOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First lien loan due december two thousand twenty eight one.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueDecemberTwoThousandTwentyEightOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due December Two Thousand Twenty Eight One [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueDecemberTwoThousandTwentyEightOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Loan due 12/2028</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IncreaseDecreaseInIncentiveFeesOnNetInvestmentIncomePayableToAffiliate_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Increase decrease in incentive fees on net investment income payable to affiliate.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IncreaseDecreaseInIncentiveFeesOnNetInvestmentIncomePayableToAffiliate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Increase Decrease In Incentive Fees On Net Investment Income Payable To Affiliate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IncreaseDecreaseInIncentiveFeesOnNetInvestmentIncomePayableToAffiliate_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Incentive fees on net investment income payable to affiliate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IssuanceOfLettersOfCreditUpToAnAggregateAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Issuance of letters of credit up to an aggregate amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IssuanceOfLettersOfCreditUpToAnAggregateAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Issuance Of Letters Of Credit Up To An Aggregate Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IssuanceOfLettersOfCreditUpToAnAggregateAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Issuance of letters of credit up to an aggregate amount.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_RaptorUsBuyerIiCorpMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Raptor US Buyer II Corp</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_RaptorUsBuyerIiCorpMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Raptor US Buyer II Corp [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_RaptorUsBuyerIiCorpMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Raptor us buyer II corp.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ApellisPharmaceuticalsIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Apellis Pharmaceuticals, Inc [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ApellisPharmaceuticalsIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Apellis Pharmaceuticals, Inc.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ApellisPharmaceuticalsIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Apellis Pharmaceuticals, Inc.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienRevolvingLoanAprilTwoThousandTwentyFiveTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First lien revolving loan April two thousand twenty five two.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienRevolvingLoanAprilTwoThousandTwentyFiveTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Revolving Loan April Two Thousand Twenty Five Two [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienRevolvingLoanAprilTwoThousandTwentyFiveTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien revolving loan ($1,411 par, due 4/2025)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentType_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Document Type</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SubordinatedNoteMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Subordinated note.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SubordinatedNoteMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Subordinated Note [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SubordinatedNoteMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Subordinated Note</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_CommercehubIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Commercehub, Inc.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_CommercehubIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Commercehub, Inc. [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_CommercehubIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Commercehub, Inc.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_Security12bTitle_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Title of 12(b) Security</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentCompanyInvestmentIncomeLossFromOperationsPerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total from operations</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentCompanyInvestmentIncomeLossFromOperationsPerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment Company, Investment Income (Loss) from Operations, Per Share</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentCompanyInvestmentIncomeLossFromOperationsPerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Total from operations</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SummaryOfCommonSharesIssuedAndProceedsReceivedTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Summary of common shares issued and proceeds received.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SummaryOfCommonSharesIssuedAndProceedsReceivedTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Summary of Common Shares Issued and Proceeds Received [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SummaryOfCommonSharesIssuedAndProceedsReceivedTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Common Shares Issued and Proceeds Received</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Cash and Cash Equivalents, at Carrying Value, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cash and Cash Equivalents, at Carrying Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cash and cash equivalents (restricted cash of $43,371 and $0, respectively)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienRevolvingLoanParDueSeptemberTwoThousandTwentyOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Revolving Loan due 9/2021</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienRevolvingLoanParDueSeptemberTwoThousandTwentyOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First-lien revolving loan par, due September Two thousand twenty-one [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienRevolvingLoanParDueSeptemberTwoThousandTwentyOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First-lien revolving loan par, due September Two thousand twenty-one.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_CurrentMarketPricePerSharePercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Current price per share, Percentage</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_CurrentMarketPricePerSharePercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of current market price per share</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_CurrentMarketPricePerSharePercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Current Market Price Per Share Percentage</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_CurrentMarketPricePerSharePercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Current market price per share percentage.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_OilGasAndConsumableFuelsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Oil, Gas and Consumable Fuels.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_OilGasAndConsumableFuelsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Oil Gas And Consumable Fuels [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_OilGasAndConsumableFuelsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Oil, Gas and Consumable Fuels</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueDecemberTwoThousandTwentySixOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First-lien Loan Due December Two Thousand Twenty Six One.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueDecemberTwoThousandTwentySixOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due December Two Thousand Twenty Six One [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueDecemberTwoThousandTwentySixOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Loan (AUD 40,000 par, Due 12/2026)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DividendsDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Dividends [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SummaryOfIndustryCompositionOfInvestmentsAtFairValueTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Summary of industry composition of investments at fair value.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SummaryOfIndustryCompositionOfInvestmentsAtFairValueTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Summary Of Industry Composition Of Investments At Fair Value [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SummaryOfIndustryCompositionOfInvestmentsAtFairValueTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Industry Composition of Investments at Fair Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementOfStockholdersEquityAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Statement of Stockholders' Equity [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentFiscalPeriodFocus_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Document Fiscal Period Focus</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_NetChangeInUnrealizedGainsLossOnInvestmentsAndForeignCurrencyTranslation_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Net Change In Unrealized Gains Loss On Investments and Foreign Currency Translation</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_NetChangeInUnrealizedGainsLossOnInvestmentsAndForeignCurrencyTranslation_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel">Net unrealized (gains) losses on investments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_NetChangeInUnrealizedGainsLossOnInvestmentsAndForeignCurrencyTranslation_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net unrealized (gains) losses on investments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_NetChangeInUnrealizedGainsLossOnInvestmentsAndForeignCurrencyTranslation_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Net change in unrealized gains (loss) on investments and foreign currency translation.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PdiTaHoldingsIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">PDI TA Holdings, Inc [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PdiTaHoldingsIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">PDI TA Holdings, Inc</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PdiTaHoldingsIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">PDI TA Holdings, Inc.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SignificantAccountingPoliciesTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Significant Accounting Policies [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SignificantAccountingPoliciesTable_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Significant accounting policies.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsOfDividends_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Dividends paid to shareholders</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsOfDividends_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Payments of Dividends</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsOfDividends_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Payments of Dividends, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueDecemberTwoThousandTwentyThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Loan due 12/2023</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueDecemberTwoThousandTwentyThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First-lien Loan Due December Two Thousand Twenty Three.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueDecemberTwoThousandTwentyThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due December Two Thousand Twenty Three [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_RisksRelatedToOurPortfolioCompanyInvestmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Risks Related to Our Portfolio Company Investments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_RisksRelatedToOurPortfolioCompanyInvestmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Risks Related to Our Portfolio Company Investments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanOneDueOctoberTwoThousandTwentyTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Loan due 10/2022</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanOneDueOctoberTwoThousandTwentyTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan One Due October Two Thousand Twenty Two [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanOneDueOctoberTwoThousandTwentyTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First Lien Loan One Due October Two Thousand Twenty Two.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueSeptemberTwoThousandTwentyEightOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First-lien Loan due September Two Thousand Twenty Eight one.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueSeptemberTwoThousandTwentyEightOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First-lien Loan Due September Two Thousand Twenty Eight One [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueSeptemberTwoThousandTwentyEightOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Loan due 9/2028</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_CapitalGainsAccrueFollowingMarchThirtyFirstTwoThousandFourteenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Capital gains accrue following March 31, 2014.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_CapitalGainsAccrueFollowingMarchThirtyFirstTwoThousandFourteenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Capital Gains Accrue Following March Thirty First Two Thousand Fourteen [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_CapitalGainsAccrueFollowingMarchThirtyFirstTwoThousandFourteenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Capital Gains Accrue Following March 31, 2014</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_MezzanineDebtInvestmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Mezzanine debt investments.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_MezzanineDebtInvestmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Mezzanine Debt Investments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_MezzanineDebtInvestmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Mezzanine Debt Investments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventTypeDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Subsequent Event Type [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanParDueSeptemberTwoThousandTwentyOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Loan due 9/2021</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanParDueSeptemberTwoThousandTwentyOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First-lien loan par, due September Two thousand twenty-one [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanParDueSeptemberTwoThousandTwentyOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First-lien loan par, due September Two thousand twenty-one.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienRevolvingLoanOctoberTwoThousandTwentyFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Revolving Loan due 10/2024</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienRevolvingLoanOctoberTwoThousandTwentyFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Revolving Loan October Two Thousand Twenty Four [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienRevolvingLoanOctoberTwoThousandTwentyFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First-lien revolving loan October two thousand twenty four.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_VarinemGermanBidcoGmbhMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Varinem German Bidco GmbH [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_VarinemGermanBidcoGmbhMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Varinem german bidco gmbH .</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_VarinemGermanBidcoGmbhMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Varinem German Bidco GmbH</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_UndistributedNetRealizedGainsLossesTaxBasis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Undistributed Net Realized Gains (Losses) Tax Basis</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_UndistributedNetRealizedGainsLossesTaxBasis_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Undistributed net realized gains (losses) tax basis.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_UndistributedNetRealizedGainsLossesTaxBasis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Undistributed net realized gains (losses) - tax basis</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentCompanyFinancialHighlightsLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment Company, Financial Highlights [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SterlingOvernightInterbankAverageRateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">SONIA</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SterlingOvernightInterbankAverageRateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Sterling Overnight Interbank Average Rate [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SterlingOvernightInterbankAverageRateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Sterling Overnight Interbank Average Rate.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueDecemberTwoThousandTwentyEightMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First Lien Loan Due December Two Thousand Twenty Eight.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueDecemberTwoThousandTwentyEightMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due December Two Thousand Twenty Eight [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueDecemberTwoThousandTwentyEightMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Loan due 12/2028</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueJuneTwoThousandTwentyTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First Lien Loan Due June Two Thousand Twenty Two.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueJuneTwoThousandTwentyTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due June Two Thousand Twenty Two [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueJuneTwoThousandTwentyTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Loan ($30,261 par, Due 6/2022)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfExcessCatchUpProvisionForPreIncentiveFeeNetInvestmentIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Percentage of excess catch-up provision for pre-incentive fee net investment income.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfExcessCatchUpProvisionForPreIncentiveFeeNetInvestmentIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Percentage Of Excess Catch Up Provision For Pre Incentive Fee Net Investment Income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfExcessCatchUpProvisionForPreIncentiveFeeNetInvestmentIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of excess catch-up provision for pre-Incentive Fee net investment income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financial Instruments [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Financial Instruments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueMarchTwentyTwentyFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Loan due 3/2024</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueMarchTwentyTwentyFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First-lien Loan Due March Twenty Twenty Four [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueMarchTwentyTwentyFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First-lien Loan Due March Twenty Twenty Four.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ForeignCurrencyTransactionGainLossUnrealized_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Unrealized Gain (Loss), Foreign Currency Transaction, before Tax</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ForeignCurrencyTransactionGainLossUnrealized_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Translation of other assets and liabilities in foreign currencies</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ForeignCurrencyTransactionGainLossUnrealized_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Net change in unrealized (gains) losses on foreign currency transactions</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentIncomeNet_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net Investment Income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentIncomeNet_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Undistributed net investment income - tax basis</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentIncomeNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment Income, Net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentIncomeNet_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Net investment income (loss)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="country_GB_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">United Kingdom</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="country_GB_lbl" xlink:role="http://www.xbrl.org/2003/role/label">UNITED KINGDOM</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EquitySecuritiesIndustryMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Industry Sector [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EquitySecuritiesIndustryMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Industry Sector</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_DelayedDrawRevolverMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Delayed Draw &amp; Revolver</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_DelayedDrawRevolverMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Delayed Draw &amp; Revolver [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_DelayedDrawRevolverMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Delayed Draw &amp; Revolver.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentCompanyFinancialHighlightsTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment Company, Financial Highlights [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsidiarySaleOfStockAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Sale of Stock [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsidiarySaleOfStockAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Sale of Stock</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentTypeCategorizationMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investments [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentTypeCategorizationMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Investments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SecondLienLoanDueOctoberTwoThousandTwentyNineMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Second-lien Loan due 10/2029</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SecondLienLoanDueOctoberTwoThousandTwentyNineMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Second-lien Loan Due October Two Thousand Twenty Nine.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SecondLienLoanDueOctoberTwoThousandTwentyNineMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Second Lien Loan Due October Two Thousand Twenty Nine [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueDecemberTwoThousandTwentySixFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First lien loan due December two thousand twenty six four.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueDecemberTwoThousandTwentySixFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due December Two Thousand Twenty Six Four [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueDecemberTwoThousandTwentySixFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien loan ($18,000 par, due 12/2026)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_MinimumPercentageOfVotingSecuritiesInInvestmentPortfolio_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Minimum percentage of voting securities in investment portfolio.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_MinimumPercentageOfVotingSecuritiesInInvestmentPortfolio_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Minimum Percentage Of Voting Securities In Investment Portfolio</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_MinimumPercentageOfVotingSecuritiesInInvestmentPortfolio_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Minimum percentage of voting securities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeTaxDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Income Taxes</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeTaxDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Income Tax Disclosure [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DesignatedAsHedgingInstrumentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Designated as Hedging Instrument [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DesignatedAsHedgingInstrumentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Designated As Hedging Instrument</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_NetExpenseForFederalExciseTaxAndOtherTaxes_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Net expense for federal excise tax and other taxes</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_NetExpenseForFederalExciseTaxAndOtherTaxes_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Net Expense For Federal Excise Tax And Other Taxes</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_NetExpenseForFederalExciseTaxAndOtherTaxes_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net expense for U.S. federal excise tax and other taxes</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_OwnershipAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Ownership [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentIssuerAffiliationAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment, Issuer Affiliation [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_HeritageEnvironmentalServicesIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Heritage Environmental Services, Inc [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_HeritageEnvironmentalServicesIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Heritage environmental services, Inc</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_HeritageEnvironmentalServicesIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Heritage Environmental Services, Inc.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueAprilTwoThousandTwentySevenOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First lien loan due April two thousand twenty seven one.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueAprilTwoThousandTwentySevenOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due April Two Thousand Twenty Seven One [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueAprilTwoThousandTwentySevenOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien loan($45,000par,due4/2027)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_ConsolidatedEntitiesDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Consolidated Entities [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_ConsolidatedEntitiesDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Consolidated Entities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_KryptonaBidCoUSLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Kryptona BidCo US, LLC</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_KryptonaBidCoUSLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Kryptona BidCo US, LLC [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_KryptonaBidCoUSLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Kryptona BidCo US, LLC.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SellingGeneralAndAdministrativeExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Expenses incurred</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SellingGeneralAndAdministrativeExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Selling, General and Administrative Expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SellingGeneralAndAdministrativeExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Selling, General and Administrative Expense, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CreditFacilityDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Credit Facility [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CreditFacilityDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Credit Facility</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Securities Available For Sale [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ElysiumBidCoLimitedMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Elysium BidCo Limited [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ElysiumBidCoLimitedMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Elysium BidCo Limited.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ElysiumBidCoLimitedMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Elysium BidCo Limited</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueJulyTwoThousandTwentySevenOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First lien loan due July two thousand twenty seven one.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueJulyTwoThousandTwentySevenOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due July Two Thousand Twenty Seven One [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueJulyTwoThousandTwentySevenOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien loan ($50,611 par, due 7/2027)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityAddressAddressLine2_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Address, Address Line Two</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_LineOfCreditFacilityStatedMaturityDate_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Line of credit facility, stated maturity date.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_LineOfCreditFacilityStatedMaturityDate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Line Of Credit Facility Stated Maturity Date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_LineOfCreditFacilityStatedMaturityDate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Line of credit facility, stated maturity date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentPeriodEndDate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Document Period End Date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivities_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net Cash Provided by (Used in) Financing Activities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Net Cash Provided by (Used in) Financing Activities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueMayTwoThousandTwentyFourOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Loan ($69,475 par, Due 5/2024)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueMayTwoThousandTwentyFourOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First-lien Loan Due May Two Thousand Twenty Four One.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueMayTwoThousandTwentyFourOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due May Two Thousand Twenty Four One [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_TrustCertificatesOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Trust certificates one.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_TrustCertificatesOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Trust Certificates One [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_TrustCertificatesOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Trust Certificates</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AlternativeInvestmentMeasurementInput_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Investment measurement input</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AlternativeInvestmentMeasurementInput_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Alternative Investment, Measurement Input</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="country_NO_lbl" xlink:role="http://www.xbrl.org/2003/role/label">NORWAY</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="country_NO_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Norway</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AgreementTerminationPeriodWithoutPenalty_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Agreement termination period, without penalty.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AgreementTerminationPeriodWithoutPenalty_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Agreement Termination Period Without Penalty</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AgreementTerminationPeriodWithoutPenalty_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Agreement termination period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DividendsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Dividends [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_NonControlledAffiliatedInvestmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Non-controlled, affiliated investments.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_NonControlledAffiliatedInvestmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Non Controlled Affiliated Investments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_NonControlledAffiliatedInvestmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Non-controlled, Affiliated Investments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EquityMethodInvestmentOwnershipPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Equity Method Investment, Ownership Percentage</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EquityMethodInvestmentOwnershipPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of investments ownership</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_WestMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">West.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_WestMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">West [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_WestMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">United States - West</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienRevolvingLoanOctoberTwoThousandTwentyFiveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First Lien Revolving Loan October Two Thousand Twenty Five.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienRevolvingLoanOctoberTwoThousandTwentyFiveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Revolving Loan October Two Thousand Twenty Five [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienRevolvingLoanOctoberTwoThousandTwentyFiveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Revolving Loan ($3,000 par, Due 10/2025)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_RapidDataGmbhUnternehmensberatungMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Rapid Data GmbH Unternehmensberatung</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_RapidDataGmbhUnternehmensberatungMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Rapid Data GmbH Unternehmensberatung [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_RapidDataGmbhUnternehmensberatungMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Rapid Data GmbH Unternehmensberatung.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ManagementFeeExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Management Fee Expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ManagementFeeExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Management fees</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeTaxExpenseBenefit_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Taxable Income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeTaxExpenseBenefit_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Income Tax Expense (Benefit)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeTaxExpenseBenefit_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Income taxes, including excise taxes</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeTaxExpenseBenefit_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Income tax expense, net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_DelayedDrawRevolverEquityMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Delayed Draw, Revolver &amp; Equity [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_DelayedDrawRevolverEquityMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Delayed Draw &amp; Revolver &amp; Equity.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_DelayedDrawRevolverEquityMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Delayed Draw, Revolver &amp; Equity</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PrepaidExpenseAndOtherAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Prepaid Expense and Other Assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PrepaidExpenseAndOtherAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Prepaid expenses and other assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_RisksRelatedToOurBusinessAndStructureMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Risks Related to Our Business and Structure.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_RisksRelatedToOurBusinessAndStructureMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Risks Related to Our Business and Structure [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_LineOfCreditFacilityExtendedDate_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Line of credit facility, extended date.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_LineOfCreditFacilityExtendedDate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Line Of Credit Facility Extended Date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_LineOfCreditFacilityExtendedDate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Line of credit facility, extended date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_TradingSymbol_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Trading Symbol</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_VariableRateAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Variable Rate [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_VariableRateAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Variable Rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockholdersEquity_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Shareholders' equity</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockholdersEquity_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Equity, Attributable to Parent</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockholdersEquity_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Ending balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockholdersEquity_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Beginning balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockholdersEquity_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total Net Assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueMarchTwentyTwentySixMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Loan due 3/2026</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueMarchTwentyTwentySixMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First-lien Loan Due March Twenty Twenty Six [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueMarchTwentyTwentySixMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First-lien Loan Due March Twenty Twenty Six.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfNetProceedsOfSaleOfEquityInterests_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Percentage of net proceeds of sale of equity interests.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfNetProceedsOfSaleOfEquityInterests_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Percentage Of Net Proceeds Of Sale Of Equity Interests</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfNetProceedsOfSaleOfEquityInterests_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of net proceeds of sale of equity interests</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentDescriptionOfVariableRateBasis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt instrument, description of variable rate basis</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentDescriptionOfVariableRateBasis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument, Description of Variable Rate Basis</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfCapitalGainIncentiveFeeSubsequentToExchangeListing_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Percentage of capital gain incentive fee subsequent to exchange listing.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfCapitalGainIncentiveFeeSubsequentToExchangeListing_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Percentage of Capital Gain Incentive Fee Subsequent to Exchange Listing</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfCapitalGainIncentiveFeeSubsequentToExchangeListing_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of capital gain incentive fee subsequent to exchange listing</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_BctoBluebillBuyerIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">BCTO Bluebill Buyer, Inc.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_BctoBluebillBuyerIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">BCTO Bluebill Buyer, Inc [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_BctoBluebillBuyerIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">BCTO Bluebill Buyer, Inc.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AlaskaBidcoOyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Alaska Bidco Oy</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AlaskaBidcoOyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Alaska Bidco Oy [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AlaskaBidcoOyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Alaska bidco oy member.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PrincipalAmountOutstandingAndAccruedInterest_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Principal amount outstanding and accrued interest</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PrincipalAmountOutstandingAndAccruedInterest_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Principal Amount Outstanding and Accrued Interest</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PrincipalAmountOutstandingAndAccruedInterest_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Principal amount outstanding and accrued interest.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueOctoberTwoThousandTwentySixMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Loan due 10/2026</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueOctoberTwoThousandTwentySixMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First-lien loan Due October Two Thousand Twenty Six.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueOctoberTwoThousandTwentySixMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due October Two Thousand Twenty Six [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentAffiliatedIssuerControlledMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Controlled, Affiliated Investments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentAffiliatedIssuerControlledMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment, Affiliated Issuer, Controlled [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IncreaseDecreaseInDistributableEarnings_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Increase (decrease) in distributable earnings</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IncreaseDecreaseInDistributableEarnings_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Increase Decrease in Distributable Earnings</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IncreaseDecreaseInDistributableEarnings_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Increase decrease in distributable earnings.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueOctoberTwoThousandTwentyFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Loan due 10/2024</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueOctoberTwoThousandTwentyFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First-lien Loan Due October Two Thousand Twenty Four.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueOctoberTwoThousandTwentyFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due October Two Thousand Twenty Four [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentCompanyGainLossOnInvestmentPerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment Company, Gain (Loss) on Investment, Per Share</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentCompanyGainLossOnInvestmentPerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net realized and unrealized gains (loss)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredTaxAssetsGross_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Deferred tax asset</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredTaxAssetsGross_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Deferred Tax Assets, Gross</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredTaxAssetsGross_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Deferred Tax Assets, Gross, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_NetExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net Expenses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_NetExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Net Expense.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_NetExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Net Expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_NetExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net Expenses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ForeignCurrencyTransactionGainLossRealized1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Foreign Currency Transaction Gain Loss Realized 1</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ForeignCurrencyTransactionGainLossRealized1_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Net realized (gains) losses on foreign currency transactions</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ForeignCurrencyTransactionGainLossRealized1_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Foreign currency transaction gain loss realized 1.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeInstrumentRiskAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative Instrument [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeInstrumentRiskAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Derivative Instrument</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InvestmentAdvisoryAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Investment advisory agreement.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InvestmentAdvisoryAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment Advisory Agreement [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InvestmentAdvisoryAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Investment Advisory Agreement</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RelatedPartyTransactionsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Related Party Transactions [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="country_LU_lbl" xlink:role="http://www.xbrl.org/2003/role/label">LUXEMBOURG</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="country_LU_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Luxembourg</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InterestRateSwapTenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Interest rate swap ten.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InterestRateSwapTenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Rate Swap Ten [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InterestRateSwapTenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest Rate Swap Ten</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueMayTwoThousandTwentyFourThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien loan due 5/2024</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueMayTwoThousandTwentyFourThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First-Lien Loan Due May Two Thousand Twenty Four Three [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueMayTwoThousandTwentyFourThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First-Lien Loan Due 5/2024.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodSharesDividendReinvestmentPlan_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Shares Issued</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodSharesDividendReinvestmentPlan_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Shares issued</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodSharesDividendReinvestmentPlan_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Stock issued in connection with dividend reinvestment plan, Shares</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentOwnedPercentOfNetAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment Owned, Net Assets, Percentage</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentOwnedPercentOfNetAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of Net Assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_CapitalCommitmentsRemainingUndrawn_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Capital commitments remaining undrawn.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_CapitalCommitmentsRemainingUndrawn_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Capital Commitments Remaining Undrawn</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_CapitalCommitmentsRemainingUndrawn_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Capital commitments remaining undrawn</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueMayTwoThousandTwentyEightMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Loan due 5/2028</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueMayTwoThousandTwentyEightMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First-lien Loan Due May Two Thousand Twenty Eight.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueMayTwoThousandTwentyEightMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due May Two Thousand Twenty Eight [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="cyd_CybersecurityRiskManagementExpertiseOfManagementResponsibleTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cybersecurity Risk Management Expertise of Management Responsible [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MeasurementInputDiscountRateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Measurement Input, Discount Rate [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MeasurementInputDiscountRateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Discount Rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ABLFILOTermLoanDueMayTwoThousandTwentyFiveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">ABL FILO Term Loan due 5/2025</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ABLFILOTermLoanDueMayTwoThousandTwentyFiveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">ABL FILO Term Loan Due May Two Thousand Twenty Five.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ABLFILOTermLoanDueMayTwoThousandTwentyFiveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">A B L F I L O Term Loan Due May Two Thousand Twenty Five [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MeasurementInputTypeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Measurement Input Type [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MeasurementInputTypeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Measurement Input Type</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienRevolvingLoanJuneTwoThousandTwentyTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First Lien Revolving Loan June Two Thousand Twenty Two.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienRevolvingLoanJuneTwoThousandTwentyTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Revolving Loan June Two Thousand Twenty Two [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienRevolvingLoanJuneTwoThousandTwentyTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Revolving Loan ($12,327 par, Due 6/2022)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_StatementGeographicalAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Geographical [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_StatementGeographicalAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Geographical</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ProceedsFromSettlementsOfInterestRateSwapsExcludingUpfrontFees_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Proceeds from settlements of interest rate swaps excluding upfront fees.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ProceedsFromSettlementsOfInterestRateSwapsExcludingUpfrontFees_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Proceeds From Settlements Of Interest Rate Swaps Excluding Upfront Fees</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ProceedsFromSettlementsOfInterestRateSwapsExcludingUpfrontFees_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Proceeds from settlements of interest rate swaps excluding upfront fees</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueOctoberTwoThousandTwentyFiveThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First lien loan due October two thousand twenty five three.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueOctoberTwoThousandTwentyFiveThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due October Two Thousand Twenty Five Three [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueOctoberTwoThousandTwentyFiveThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien loan (CAD 74,062 par, due 10/2025)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SummaryOfReconciliationIncreaseInNetAssetsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Summary Of Reconciliation Increase In Net Assets [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SummaryOfReconciliationIncreaseInNetAssetsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Summary of reconciliation increase in net assets.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SummaryOfReconciliationIncreaseInNetAssetsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Reconciliation Increase in Net Assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AdjustedDailySimpleSecuredOvernightFinancingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Adjusted daily simple secured overnight financing.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AdjustedDailySimpleSecuredOvernightFinancingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Adjusted Daily Simple Secured Overnight Financing [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AdjustedDailySimpleSecuredOvernightFinancingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Adjusted Daily SOFR</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ReimbursementOfTransactionRelatedExpensesPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Reimbursement of transaction-related expenses.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ReimbursementOfTransactionRelatedExpensesPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Reimbursement Of Transaction Related Expenses [Policy Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ReimbursementOfTransactionRelatedExpensesPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Reimbursement of Transaction-Related Expenses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UseOfEstimates_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Use of Estimates, Policy [Policy Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UseOfEstimates_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Use of Estimates</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_RepaymentOnInvestments_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Repayments on investments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_RepaymentOnInvestments_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Repayment On Investments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_RepaymentOnInvestments_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Repayment on investments.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueAprilTwoThousandTwentyThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Loan due 4/2023</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueAprilTwoThousandTwentyThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First-lien Loan Due April Two Thousand Twenty Three.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueAprilTwoThousandTwentyThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due April Two Thousand Twenty Three [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfInvestmentsAtFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Investment fair value percentage</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfInvestmentsAtFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Percentage of investments at fair value.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfInvestmentsAtFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Percentage Of Investments At Fair Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashAndCashEquivalentsPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cash and Cash Equivalents, Policy [Policy Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashAndCashEquivalentsPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cash and Cash Equivalents</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_DividendsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Dividends [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_DividendsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Dividends</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_DividendsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Dividends.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ChemicalsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Chemicals.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ChemicalsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Chemicals [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ChemicalsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Chemicals</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InterestRateSwapTwelveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Interest rate swap twelve.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InterestRateSwapTwelveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Rate Swap Twelve [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InterestRateSwapTwelveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest Rate Swap Twelve</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueNovemberTwoThousandTwentySixMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Loan due 11/2026</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueNovemberTwoThousandTwentySixMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First-lien Loan Due November Two Thousand Twenty Six.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueNovemberTwoThousandTwentySixMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due November Two Thousand Twenty Six [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IncreaseDecreaseInIncentiveFeesOnNetCapitalGainsLossesAccruedToAffiliate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Increase Decrease In Incentive Fees On Net Capital Gains Losses Accrued To Affiliate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IncreaseDecreaseInIncentiveFeesOnNetCapitalGainsLossesAccruedToAffiliate_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Increase decrease in incentive fees on net capital gains (losses) accrued to affiliate.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IncreaseDecreaseInIncentiveFeesOnNetCapitalGainsLossesAccruedToAffiliate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Incentive fees on net capital gains accrued to affiliate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DividendsPayableAmountPerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Dividend per Share</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DividendsPayableAmountPerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Dividends Payable, Amount Per Share</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfCumulativeRealizedCapitalGainsLessAggregateCapitalGainIncentiveFee_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Percentage of cumulative realized capital gains less aggregate capital gain incentive fee.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfCumulativeRealizedCapitalGainsLessAggregateCapitalGainIncentiveFee_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Percentage of Cumulative Realized Capital Gains Less Aggregate Capital Gain Incentive Fee</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfCumulativeRealizedCapitalGainsLessAggregateCapitalGainIncentiveFee_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of cumulative realized capital gains less aggregate capital gain incentive fee</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InterestAndDividendIncomeRecognitionPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Interest and dividend income recognition.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InterestAndDividendIncomeRecognitionPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest and Dividend Income Recognition [Policy Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InterestAndDividendIncomeRecognitionPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest and Dividend Income Recognition</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ClassOfStockLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Class of Stock [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ClassOfStockLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Class Of Stock [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_BedBathAndBeyondIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Bed Bath and Beyond Inc.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_BedBathAndBeyondIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Bed Bath And Beyond Inc [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_BedBathAndBeyondIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Bed Bath and Beyond Inc.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherCommitment_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Commitment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherCommitment_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other commitments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherCommitment_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Other Commitment, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_StatementScenarioAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Scenario [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_StatementScenarioAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Scenario</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SubordinatedNoteDueSeptemberTwoThousandTwentySixMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Subordinated Note due 9/2026</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SubordinatedNoteDueSeptemberTwoThousandTwentySixMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Subordinated Note Due September Two Thousand Twenty Six.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SubordinatedNoteDueSeptemberTwoThousandTwentySixMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Subordinated Note Due September Two Thousand Twenty Six [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienRevolvingLoanDueMayTwoThousandTwentyFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First Lien Revolving Loan Due 5/2024</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienRevolvingLoanDueMayTwoThousandTwentyFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First lien revolving loan due may two thousand twenty four.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienRevolvingLoanDueMayTwoThousandTwentyFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Revolving Loan Due May Two Thousand Twenty Four [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ElementsFincoLimitedMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Elements Finco Limited [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ElementsFincoLimitedMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Elements Finco Limited.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ElementsFincoLimitedMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Elements Finco Limited</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_SecurityExchangeName_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Security Exchange Name</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InterestRateSwapEightMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Interest rate swap eight.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InterestRateSwapEightMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Rate Swap Eight [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InterestRateSwapEightMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest Rate Swap Eight</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="cyd_MaterialCybersecurityIncidentNatureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Material Cybersecurity Incident Nature [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueDecemberTwoThousandTwentyFiveTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First-lien Loan Due December Two Thousand Twenty Five Two.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueDecemberTwoThousandTwentyFiveTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due December Two Thousand Twenty Five Two [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueDecemberTwoThousandTwentyFiveTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Loan ($12,989 par, Due 12/2025)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_NetInvestmentGainLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net Investment Income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_NetInvestmentGainLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net Investment Income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_NetInvestmentGainLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Net Investment Gain Loss</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_NetInvestmentGainLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Net investment gain (loss).</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingExpenses_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total expenses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingExpenses_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Operating Expenses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Class of Financing Receivable [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Class of Financing Receivable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IncrementalTermLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Incremental Term Loan [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IncrementalTermLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Incremental term loan member.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IncrementalTermLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Incremental Term Loan</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueDecemberTwoThousandTwentySevenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Loan due 12/2027</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueDecemberTwoThousandTwentySevenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First-lien Loan Due December Two Thousand Twenty Seven.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueDecemberTwoThousandTwentySevenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due December Two Thousand Twenty Seven [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestAndDebtExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total Interest Expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestAndDebtExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest and Debt Expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestAndDebtExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Total Interest Expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="cyd_MaterialCybersecurityIncidentInformationNotAvailableOrUndeterminedTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Material Cybersecurity Incident Information Not Available or Undetermined [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementClassOfStockAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Class of Stock</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_GeneralRiskFactorsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">General Risk Factors.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_GeneralRiskFactorsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">General Risk Factors [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AvalaraIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Avalara, Inc.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AvalaraIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Avalara, Inc [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AvalaraIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Avalara, Inc.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeMaturityDates_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Maturity Date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeMaturityDates_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Derivative maturity date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeMaturityDates_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative, Contract End Date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueDisclosuresTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Disclosures [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueDisclosuresTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value of Financial Instruments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Non-controlling investments percentage</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Subsidiary, Ownership Percentage, Noncontrolling Owner</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Subsequent Event</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Subsequent Event [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetsNet_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedTotalLabel">Total Net Assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetsNet_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total Net Assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetsNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Net Assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetsNet_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Net Assets, Ending Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetsNet_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Net Assets, Beginning Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MaximumMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Maximum [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MaximumMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Maximum</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesAndStockholdersEquity_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Liabilities and Equity</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesAndStockholdersEquity_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total Liabilities and Net Assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfManagementFeeCalculatedOnGrossAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Percentage of management fee calculated on gross assets.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfManagementFeeCalculatedOnGrossAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Percentage Of Management Fee Calculated On Gross Assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfManagementFeeCalculatedOnGrossAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of management fee on gross assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_RevolverPartnershipInterestMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Revolver &amp; Partnership Interest</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_RevolverPartnershipInterestMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Revolver &amp; Partnership Interest [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_RevolverPartnershipInterestMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Revolver &amp; Partnership Interest.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfOrdinaryIncomeQualifiedAsInterestRelatedDividendExemptFromDomesticWithholdingTaxApplicableToForeignShareholder_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of ordinary income qualified as interest related dividend exempt from US withholding tax applicable to non-US shareholder</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfOrdinaryIncomeQualifiedAsInterestRelatedDividendExemptFromDomesticWithholdingTaxApplicableToForeignShareholder_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Percentage of Ordinary Income Qualified as Interest Related Dividend Exempt from Domestic Withholding Tax Applicable to Foreign Shareholder</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfOrdinaryIncomeQualifiedAsInterestRelatedDividendExemptFromDomesticWithholdingTaxApplicableToForeignShareholder_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Percentage of ordinary income qualified as interest related dividend exempt from domestic withholding tax applicable to foreign shareholder.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_KangarooBidcoASMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Kangaroo Bidco AS</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_KangarooBidcoASMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Kangaroo Bidco A S [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_KangarooBidcoASMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Kangaroo Bidco A S.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_OfferingFees_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Offering fees.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_OfferingFees_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Offering Fees</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_OfferingFees_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Offering expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_O2024Q4Dividends1Member_lbl" xlink:role="http://www.xbrl.org/2003/role/label">O 2024 Q4 Dividends1 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_O2024Q4Dividends1Member_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">O 2024 Q4 Dividends1.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SupplementalCashFlowInformationAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Supplemental Cash Flow Information [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SupplementalCashFlowInformationAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Supplemental Information:</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PrimeRateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Prime Rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PrimeRateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Prime Rate [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueFebruaryTwoThousandTwentyFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Loan due 2/2024</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueFebruaryTwoThousandTwentyFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First-Lien Loan Due February Two Thousand Twenty Four [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueFebruaryTwoThousandTwentyFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First-Lien Loan Due February Two Thousand Twenty Four [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_MinimumPercentageOfInvestmentCompanyTaxableIncomeDistributeToStockholdersInEachTaxableYearToQualifyAsRIC_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Minimum percentage of investment company taxable income distribute to stockholders in each taxable year to qualify as RIC.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_MinimumPercentageOfInvestmentCompanyTaxableIncomeDistributeToStockholdersInEachTaxableYearToQualifyAsRIC_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Minimum Percentage Of Investment Company Taxable Income Distribute To Stockholders In Each Taxable Year To Qualify As R I C</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_MinimumPercentageOfInvestmentCompanyTaxableIncomeDistributeToStockholdersInEachTaxableYearToQualifyAsRIC_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Minimum percentage of investment company taxable income distribute to stockholders in each taxable year to qualify as RIC</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareDiluted_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Earnings per common share-diluted</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareDiluted_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Earnings (losses) per common share - diluted</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareDiluted_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Earnings Per Share, Diluted, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareDiluted_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Earnings Per Share, Diluted</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityExTransitionPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Ex Transition Period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Dividends_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Dividends declared from net investment income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Dividends_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Dividends, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Dividends_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Dividends</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Dividends_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Dividends</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Liabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Liabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total Liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementsFairValueHierarchyDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Hierarchy and NAV [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementsFairValueHierarchyDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value Hierarchy and NAV</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FairValueOfAnEffectiveHedge_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Fair value of an effective hedge.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FairValueOfAnEffectiveHedge_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Of An Effective Hedge</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FairValueOfAnEffectiveHedge_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair value of an effective hedge</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeGainLossStatementOfIncomeOrComprehensiveIncomeExtensibleEnumeration_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_ScenarioForecastMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Forecast [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_ScenarioForecastMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Forecast</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_NondeductibleFederalExciseTaxPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Nondeductible federal excise tax percentage.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_NondeductibleFederalExciseTaxPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Nondeductible Federal Excise Tax Percentage</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_NondeductibleFederalExciseTaxPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Nondeductible U.S. federal excise tax percentage</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodSharesNewIssues_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stock Issued During Period, Shares, New Issues</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodSharesNewIssues_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Issuance of common shares, shares</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UnrecognizedTaxBenefits_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Unrecognized Tax Benefits, Beginning Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UnrecognizedTaxBenefits_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Unrecognized Tax Benefits, Ending Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UnrecognizedTaxBenefits_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Unrecognized Tax Benefits</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UnrecognizedTaxBenefits_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Unrecognized tax benefits</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueSeptemberTwoThousandTwentyThreeTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First lien loan due September two thousand twenty three two.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueSeptemberTwoThousandTwentyThreeTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due September Two Thousand Twenty Three Two [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueSeptemberTwoThousandTwentyThreeTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien loan ($86,466 par, due 9/2023)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RealizedInvestmentGainsLosses_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Realized Investment Gains (Losses)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RealizedInvestmentGainsLosses_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Realized Investment Gains (Losses), Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RealizedInvestmentGainsLosses_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Non-controlled, non-affiliated investments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RealizedInvestmentGainsLosses_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Net realized (gains) losses on investments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_TransportationMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Transportation.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_TransportationMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Transportation [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_TransportationMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Transportation</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentIssuerAffiliationDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment, Issuer Affiliation [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PurchasesAndOriginationsOfInvestmentsNet_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Purchases and originations of investments, net.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PurchasesAndOriginationsOfInvestmentsNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Purchases And Originations Of Investments Net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PurchasesAndOriginationsOfInvestmentsNet_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Purchases and originations of investments, net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueAprilTwoThousandTwentyFiveFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First lien loan due April two thousand twenty five four.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueAprilTwoThousandTwentyFiveFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due April Two Thousand Twenty Five Four [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueAprilTwoThousandTwentyFiveFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien loan (EUR 9,070 par, due 4/2025)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueOctoberTwoThousandTwentyFourThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Loan ($25,233 par, Due 10/2024)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueOctoberTwoThousandTwentyFourThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First lien loan due October two thousand twenty four three.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueOctoberTwoThousandTwentyFourThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due October Two Thousand Twenty Four Three [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityFilerCategory_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Filer Category</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SportAllianceGmbhMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Sport Alliance GmbH</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SportAllianceGmbhMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Sport Alliance GMBH [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SportAllianceGmbhMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Sport Alliance GMBH.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InvestmentDueDate_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Investment due date.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InvestmentDueDate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment Due Date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InvestmentDueDate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Investment due date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SkylarkUkDebtcoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">SkyLark UK DebtCo</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SkylarkUkDebtcoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">SkyLark UK DebtCo [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SkylarkUkDebtcoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">SkyLark UK DebtCo.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_EstimatedGrossUnrealizedLossOnTaxCostInvestment_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Estimated gross unrealized loss on tax cost investment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_EstimatedGrossUnrealizedLossOnTaxCostInvestment_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Estimated Gross Unrealized Loss on Tax Cost Investment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_EstimatedGrossUnrealizedLossOnTaxCostInvestment_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Estimated gross unrealized loss on tax cost investment.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Class of Financing Receivable [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Class of Financing Receivable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_RepaymentsOnInvestments_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Repayments on investments.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_RepaymentsOnInvestments_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Repayments On Investments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_RepaymentsOnInvestments_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Repayments on investments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FlightIntermediateHoldCoIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Flight Intermediate HoldCo, Inc</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FlightIntermediateHoldCoIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Flight Intermediate HoldCo, Inc [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FlightIntermediateHoldCoIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Flight Intermediate HoldCo, Inc.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfPreIncentiveFeeNetInvestmentIncomeAnnualizedAfterCatchUpAchieved_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Percentage of pre-incentive fee net investment income, annualized after catch-up achieved.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfPreIncentiveFeeNetInvestmentIncomeAnnualizedAfterCatchUpAchieved_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Percentage Of Pre Incentive Fee Net Investment Income Annualized After Catch Up Achieved</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfPreIncentiveFeeNetInvestmentIncomeAnnualizedAfterCatchUpAchieved_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of pre-Incentive Fee net investment income annualized</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienRevolvingLoanDueOctoberTwoThousandTwentyTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien revolving loan due 10/2022</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienRevolvingLoanDueOctoberTwoThousandTwentyTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Revolving Loan Due October Two Thousand Twenty Two [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienRevolvingLoanDueOctoberTwoThousandTwentyTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First lien revolving loan due october two thousand twenty two.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_BtrsHoldingsIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">BTRS Holdings, Inc.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_BtrsHoldingsIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">BTRS Holdings, Inc [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_BtrsHoldingsIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">BTRS Holdings, Inc.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NonoperatingIncomeExpenseAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Nonoperating Income (Expense) [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NonoperatingIncomeExpenseAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueSeptemberTwoThousandTwentySixOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Loan due 9/2026</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueSeptemberTwoThousandTwentySixOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First Lien Loan Due September Two Thousand Twenty Six One.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueSeptemberTwoThousandTwentySixOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due September Two Thousand Twenty Six One [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ManagementFeeWaiverHurdle_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of asset coverage</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ManagementFeeWaiverHurdle_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Management Fee Waiver Hurdle</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ManagementFeeWaiverHurdle_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Management fee waiver hurdle.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeNotionalAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Notional amount of interest rate swap</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeNotionalAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Notional value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeNotionalAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Notional amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_CurrentFiscalYearEndDate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Current Fiscal Year End Date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienRevolvingLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First lien revolving loan.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienRevolvingLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Revolving Loan [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienRevolvingLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First Lien Revolving Loan</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_S2024Q4DividendsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">S 2024 Q4 Dividends [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_S2024Q4DividendsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">S 2024 Q4 Dividends.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_S2024Q4DividendsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">S2024 Q4 Dividends [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AblFiloTermLoanDueMayTwoThousandTwentyFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">ABL FILO Term Loan due 5/2024</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AblFiloTermLoanDueMayTwoThousandTwentyFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">ABL FILO Term Loan Due May Two Thousand Twenty Four [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AblFiloTermLoanDueMayTwoThousandTwentyFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">ABL FILO term loan due may two thousand twenty four.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RepaymentsOfShortTermDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Repayments of Short-Term Debt, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RepaymentsOfShortTermDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Repayments of Short-Term Debt</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RepaymentsOfShortTermDebt_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Repayments on debt</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_GalileoParentincMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Galileo Parent Inc.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_GalileoParentincMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Galileo Parent Inc</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_GalileoParentincMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Galileo ParentInc [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RelatedPartyTransactionAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Related Party Transaction [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RelatedPartyTransactionAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Related Party Transaction</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_LeverageWaiverMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Leverage waiver.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_LeverageWaiverMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Leverage Waiver [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_LeverageWaiverMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Leverage Waiver</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueJulyTwoThousandTwentyTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Loan due 7/2022</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueJulyTwoThousandTwentyTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due July Two Thousand Twenty Two [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueJulyTwoThousandTwentyTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First lien loan due July two thousand twenty two.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Related and Nonrelated Parties [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Related Party</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityRegistrantName_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Registrant Name</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_EdgeBidcoBVMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Edge Bidco BV</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_EdgeBidcoBVMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Edge Bidco B V [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_EdgeBidcoBVMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Edge Bidco B.V.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ControlledAffiliatedInvestmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Controlled, affiliated investments.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ControlledAffiliatedInvestmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Controlled Affiliated Investments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ControlledAffiliatedInvestmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Controlled, Affiliated Investments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueAugustTwoThousandTwentyTwoOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First lien loan due august two thousand twenty two one.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueAugustTwoThousandTwentyTwoOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due August Two Thousand Twenty Two One [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueAugustTwoThousandTwentyTwoOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien loan($62,725par,due8/2022)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_QuarterlyFinancialInformationTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Quarterly Financial Information [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_QuarterlyFinancialInformationTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Selected Quarterly Financial Data (Unaudited)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentCompanyFinancialHighlightsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment Company, Financial Highlights [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentCompanyFinancialHighlightsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Financial Highlights</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NumberOfReportableSegments_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Number of Reportable Segments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NumberOfReportableSegments_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of reportable segment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ChangeInAccountingPrincipleAccountingStandardsUpdateEarlyAdoption_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Change in Accounting Principle, Accounting Standards Update, Early Adoption [true false]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ChangeInAccountingPrincipleAccountingStandardsUpdateEarlyAdoption_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Change in accounting principle, accounting standards update, early adoption [true false]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Earnings Per Share</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Earnings Per Share [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentMaturityDate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument, Maturity Date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentMaturityDate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt instrument, maturity date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityEmergingGrowthCompany_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Emerging Growth Company</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SwapSettlement_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Swap settlement.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SwapSettlement_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Swap Settlement</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SwapSettlement_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Swap settlement</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_BtrsHoldingIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">BTRS Holding Inc. [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_BtrsHoldingIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">BTRS Holding Inc. [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_BtrsHoldingIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">BTRS Holdings, Inc.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentTypeExtensibleEnumeration_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment, Type [Extensible Enumeration]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Denominator for basic weighted average shares</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Weighted Average Number of Shares Outstanding, Basic, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted average common shares outstanding-basic</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Weighted average Common Shares outstanding-basic</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueDecemberTwoThousandTwentySevenThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First lien loan due December two thousand twenty seven three.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueDecemberTwoThousandTwentySevenThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due December Two Thousand Twenty Seven Three [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueDecemberTwoThousandTwentySevenThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien loan (CAD 55,042 par, due 12/2027)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LossContingenciesLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Loss Contingencies [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LossContingenciesLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Loss Contingencies [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_TaxCostOfInvestments_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Tax Cost of Investments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_TaxCostOfInvestments_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Tax cost of investments.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_TaxCostOfInvestments_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Tax cost of investments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_TaxCostOfInvestments_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Estimated cost basis of investments for U.S. federal tax purposes</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfAllRemainingPreIncentiveFeeNetInvestmentIncomeQuarterlySubsequentToExchangeListing_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Percentage of all remaining pre incentive fee net investment income quarterly subsequent to exchange listing.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfAllRemainingPreIncentiveFeeNetInvestmentIncomeQuarterlySubsequentToExchangeListing_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Percentage of All Remaining Pre Incentive Fee Net Investment Income Quarterly Subsequent to Exchange Listing</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfAllRemainingPreIncentiveFeeNetInvestmentIncomeQuarterlySubsequentToExchangeListing_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of all remaining pre-incentive fee net investment income quarterly subsequent to exchange listing</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueDecemberTwoThousandTwentyFourOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Loan ($8,775 par, Due 12/2024)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueDecemberTwoThousandTwentyFourOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First lien loan due December two thousand twenty four one.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueDecemberTwoThousandTwentyFourOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due December Two Thousand Twenty Four One [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FinancialServicesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Financial services.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FinancialServicesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financial Services [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FinancialServicesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Financial Services</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfMinimumQualifyingAssetsToPurchaseNonQualifyingAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Percentage of minimum qualifying assets to purchase non-qualifying assets.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfMinimumQualifyingAssetsToPurchaseNonQualifyingAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Percentage Of Minimum Qualifying Assets To Purchase Non Qualifying Assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfMinimumQualifyingAssetsToPurchaseNonQualifyingAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of minimum qualifying assets to purchase non qualifying assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockSharesAuthorized_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock, Shares Authorized</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockSharesAuthorized_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common shares, authorized</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_HippoXpaBidcoAbMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Hippo XPA Bidco AB [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_HippoXpaBidcoAbMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Hippo XPA Bidco AB</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_HippoXpaBidcoAbMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Hippo XPA Bidco AB</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SecondLienDebtInvestmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Second-lien debt investments.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SecondLienDebtInvestmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Second Lien Debt Investments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SecondLienDebtInvestmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Second-lien Debt Investments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromIssuanceOfCommonStock_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Proceeds From Issuance Of Common Stock, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromIssuanceOfCommonStock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Proceeds from Issuance of Common Stock</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromIssuanceOfCommonStock_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Proceeds Received</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromIssuanceOfCommonStock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Proceeds from issuance of common shares</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="country_BM_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Bermuda</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="country_BM_lbl" xlink:role="http://www.xbrl.org/2003/role/label">BERMUDA</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_O2024Q21DividendsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">O 2024 Q2 1 Dividends [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_O2024Q21DividendsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">O 2024 Q2 1 Dividends.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_O2024Q21DividendsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">O 2024 Q2 1 Dividends [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_O2023Q2DividendsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">O 2023 Q2 Dividends [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_O2023Q2DividendsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">O 2023 Q2 Dividends.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_O2023Q2DividendsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">O2023 Q2 Dividends [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IncentiveFeesOnNetInvestmentIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Incentive fees realized and payable to advisor</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IncentiveFeesOnNetInvestmentIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Incentive fees on net investment income.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IncentiveFeesOnNetInvestmentIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Incentive Fees On Net Investment Income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IncentiveFeesOnNetInvestmentIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Incentive fees on net investment income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueOctoberTwoThousandTwentyThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Loan due 10/2023</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueOctoberTwoThousandTwentyThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due October Two Thousand Twenty Three [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueOctoberTwoThousandTwentyThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First lien loan due october two thousand twenty three.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_TwoThousandTwentyThreeTwentyFourTwentySixAndTwentyEightNotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2023 Notes, 2024 Notes, 2026 Notes and 2028 Notes</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_TwoThousandTwentyThreeTwentyFourTwentySixAndTwentyEightNotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Two Thousand Twenty Three Twenty Four Twenty Six And Twenty Eight Notes [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_TwoThousandTwentyThreeTwentyFourTwentySixAndTwentyEightNotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Two thousand twenty three twenty four twenty six and twenty eight notes.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueInputsLevel1Member_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Level 1</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueInputsLevel1Member_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Inputs, Level 1 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PaymentsForSettlementsOfInterestRateSwapsExcludingUpfrontFees_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Payments for settlements of interest rate swaps excluding upfront fees.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PaymentsForSettlementsOfInterestRateSwapsExcludingUpfrontFees_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Payments For Settlements Of Interest Rate Swaps Excluding Upfront Fees</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PaymentsForSettlementsOfInterestRateSwapsExcludingUpfrontFees_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Payments for settlements of interest rate swaps excluding upfront fees</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtDisclosureAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Disclosure [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentsIncorporatedByReferenceTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Documents Incorporated by Reference</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InterestRateSwapTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Interest rate swap two.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InterestRateSwapTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Rate Swap Two [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InterestRateSwapTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest Rate Swap Two</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancialInstrumentAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financial Instrument [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancialInstrumentAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Financial Instrument</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerSharePolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Earnings Per Share, Policy [Policy Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerSharePolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Earnings Per Share</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_O2024Q22DividendsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">O2024 Q22 Dividends [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_O2024Q22DividendsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">O 2024 Q2 2 Dividends [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_O2024Q22DividendsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">O 2024 Q2 2 Dividends.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InvestmentsAtFairValueTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Investments at fair value.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InvestmentsAtFairValueTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investments At Fair Value [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InvestmentsAtFairValueTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Investments at Fair Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_NetChangeInUnrealizedGainsLossesOnInvestmentsAndForeignCurrencyTranslation_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Net unrealized (gain) loss on investments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_NetChangeInUnrealizedGainsLossesOnInvestmentsAndForeignCurrencyTranslation_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net change in unrealized gain (losses) on investments and foreign currency translation</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_NetChangeInUnrealizedGainsLossesOnInvestmentsAndForeignCurrencyTranslation_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Net change in unrealized gains (losses) on investments and foreign currency translation.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_NetChangeInUnrealizedGainsLossesOnInvestmentsAndForeignCurrencyTranslation_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Net Change In Unrealized Gains Losses On Investments And Foreign Currency Translation</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_NetChangeInUnrealizedGainsLossesOnInvestmentsAndForeignCurrencyTranslation_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total net change in unrealized gains (losses)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_NetChangeInUnrealizedGainsLossesOnInvestmentsAndForeignCurrencyTranslation_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Net unrealized (gains) losses on investments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt, Policy [Policy Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Issuance Costs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GeneralAndAdministrativeExpenseMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other General and Administrative Expenses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GeneralAndAdministrativeExpenseMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">General and Administrative Expense [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UndistributedEarnings_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Undistributed Earnings, Basic</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UndistributedEarnings_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total distributable earnings - book basis</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_NetAssetsDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Net Assets.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_NetAssetsDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Net Assets Disclosure [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_NetAssetsDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net Assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AutomotiveSectorMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Automotive</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AutomotiveSectorMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Automotive Sector [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Investments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PurchaseCommitmentToFundInvestment_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Purchase commitment to fund investment.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PurchaseCommitmentToFundInvestment_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Purchase Commitment To Fund Investment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PurchaseCommitmentToFundInvestment_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Total Portfolio Company Commitments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_RepurchaseOfConvertibleNotes_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Repurchase of convertible notes</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_RepurchaseOfConvertibleNotes_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Repurchase of Convertible Notes</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_RepurchaseOfConvertibleNotes_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Repurchase of convertible notes.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="cyd_CybersecurityRiskRoleOfManagementTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cybersecurity Risk Role of Management [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtSecurities_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Debt Securities, Available-for-Sale, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtSecurities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtSecurities_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccountingPoliciesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accounting Policies [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ManagementFeePayable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Management Fee Payable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ManagementFeePayable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Management fees payable to affiliate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SkyBidcoSPAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Sky Bidco S.p.A</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SkyBidcoSPAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Sky Bidco S.p.A [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SkyBidcoSPAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Sky Bidco S.p.A.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ManagementAndIncentiveFeesWaived_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Management and incentive fees waived</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ManagementAndIncentiveFeesWaived_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Management and incentive fees waived (Note 3)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ManagementAndIncentiveFeesWaived_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Management and Incentive Fees Waived</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ManagementAndIncentiveFeesWaived_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Management and incentive fees waived.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AblFiloTermLoanOneDueAprilTwoThousandTwentyFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">ABL FILO Term Loan due 4/2024</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AblFiloTermLoanOneDueAprilTwoThousandTwentyFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">ABL FILO Term Loan One Due April Two Thousand Twenty Four [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AblFiloTermLoanOneDueAprilTwoThousandTwentyFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">ABL FILO Term Loan One Due April Two Thousand Twenty Four.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCredit_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Line of credit, outstanding amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCredit_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Long-Term Line of Credit</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCredit_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Long-Term Line of Credit, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeTaxDisclosureAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Income Tax Disclosure [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockholdersEquityAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Equity, Attributable to Parent [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockholdersEquityAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net Assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfManagementFeeInExcessOfQuarterRateOnGrossAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of management fee in excess of quarter rate on gross assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfManagementFeeInExcessOfQuarterRateOnGrossAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Percentage of Management Fee in Excess of Quarter Rate on Gross Assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfManagementFeeInExcessOfQuarterRateOnGrossAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Percentage of management fee in excess of quarter rate on gross assets.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueJulyTwoThousandTwentyFiveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Loan due 7/2025</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueJulyTwoThousandTwentyFiveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First-lien Loan Due July Two Thousand Twenty Five.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueJulyTwoThousandTwentyFiveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due July Two Thousand Twenty Five [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_O2023Q4DividendsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">O 2023 Q4 Dividends [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_O2023Q4DividendsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">O 2023 Q4 dividends.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_O2023Q4DividendsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">O2023 Q4 Dividends [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_OfficeProductsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Office Products.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_OfficeProductsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Office Products [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_OfficeProductsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Office Products</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InterestRateSwapFourteenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest Rate Swap Fourteen</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InterestRateSwapFourteenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Rate Swap Fourteen [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InterestRateSwapFourteenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Interest Rate Swap Fourteen.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_LynxBidcoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lynx BidCo [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_LynxBidcoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Lynx bidCo.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_LynxBidcoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Lynx BidCo</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_CommunicationsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Communications.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_CommunicationsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Communications [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_CommunicationsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Communications</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TaxCreditCarryforwardLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Tax Credit Carryforward [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_EstimatedGrossUnrealizedGainsOnTaxCostInvestment_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Estimated gross unrealized gains on tax cost investment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_EstimatedGrossUnrealizedGainsOnTaxCostInvestment_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Estimated Gross Unrealized Gains on Tax Cost Investment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_EstimatedGrossUnrealizedGainsOnTaxCostInvestment_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Estimated gross unrealized gains on tax cost investment.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AdjustedTermSimpleSecuredOvernightFinancingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Adjusted term simple secured overnight financing.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AdjustedTermSimpleSecuredOvernightFinancingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Adjusted Term Simple Secured Overnight Financing [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AdjustedTermSimpleSecuredOvernightFinancingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Adjusted Term SOFR</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Statement [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Statement [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueOctoberTwoThousandTwentyFiveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Loan due 10/2025</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueOctoberTwoThousandTwentyFiveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First-lien Loan Due October Two Thousand Twenty Five.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueOctoberTwoThousandTwentyFiveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due October Two Thousand Twenty Five [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SegmentReportingPolicyPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Segment Reporting, Policy [Policy Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SegmentReportingPolicyPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Segment Reporting</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueSeptemberTwoThousandTwentySixSevenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First lien loan due September two thousand twenty six seven.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueSeptemberTwoThousandTwentySixSevenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due September Two Thousand Twenty Six Seven [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueSeptemberTwoThousandTwentySixSevenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien loan ($22,730 par, due 9/2026)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueAprilTwoThousandTwentyFiveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Loan due 4/2025</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueAprilTwoThousandTwentyFiveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First-lien Loan Due April Two Thousand Twenty Five.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueAprilTwoThousandTwentyFiveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due April Two Thousand Twenty Five [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueAprilTwoThousandTwentyThreeOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First lien loan due April two thousand twenty three one.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueAprilTwoThousandTwentyThreeOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due April Two Thousand Twenty Three One [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueAprilTwoThousandTwentyThreeOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien loan($59,318par,due4/2023)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_TrustCertificatesTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Trust certificates two.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_TrustCertificatesTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Trust Certificates Two [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_TrustCertificatesTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Trust Certificates</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodValueDividendReinvestmentPlan_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Shares issued in connection with dividend reinvestment plan</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodValueDividendReinvestmentPlan_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stock Issued During Period, Value, Dividend Reinvestment Plan</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodValueDividendReinvestmentPlan_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Stock issued in connection with dividend reinvestment plan</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfExcessPreIncentiveFeeNetInvestmentIncomePayableAfterHurdleRateReachedAndCatchUpAchieved_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Percentage of excess pre-incentive fee net investment income payable after hurdle rate reached and catch-up achieved.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfExcessPreIncentiveFeeNetInvestmentIncomePayableAfterHurdleRateReachedAndCatchUpAchieved_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Percentage Of Excess Pre Incentive Fee Net Investment Income Payable After Hurdle Rate Reached And Catch Up Achieved</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfExcessPreIncentiveFeeNetInvestmentIncomePayableAfterHurdleRateReachedAndCatchUpAchieved_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of excess pre-Incentive Fee net investment income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienTermLoanDueDecemberTwoThousandTwentySixMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Term Loan due 12/2026</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienTermLoanDueDecemberTwoThousandTwentySixMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Term Loan Due December Two Thousand Twenty Six [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienTermLoanDueDecemberTwoThousandTwentySixMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First lien term loan due december two thousand twenty six.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="country_AU_lbl" xlink:role="http://www.xbrl.org/2003/role/label">AUSTRALIA</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="country_AU_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Australia</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ApteanIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Aptean Inc [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ApteanIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Aptean Inc</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ApteanIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Aptean, Inc.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockSharesAuthorized_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Preferred Stock, Shares Authorized</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockSharesAuthorized_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Preferred stock, shares authorized</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienTermLoanDueSeptemberTwoThousandTwentyFiveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Term Loan due 9/2025</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienTermLoanDueSeptemberTwoThousandTwentyFiveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Term Loan Due September Two Thousand Twenty Five [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienTermLoanDueSeptemberTwoThousandTwentyFiveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First lien term loan due september two thousand twenty five.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfCapitalGainsFromApril12024HurdleRate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of incentive fee rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfCapitalGainsFromApril12024HurdleRate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Percentage of Capital Gains From April 1 2024 Hurdle Rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfCapitalGainsFromApril12024HurdleRate_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Percentage of capital gains from April 1, 2024 hurdle rate.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Changes in Fair Value of Investments Using Level 3 Inputs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_O2024Q1DividendsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">O 2024 Q1 Dividends [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_O2024Q1DividendsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">O 2024 Q1 Dividends.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_O2024Q1DividendsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">O2024 Q1 Dividends [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityFileNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity File Number</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net Increase (Decrease) in Cash, Cash Equivalents and Restricted Cash</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ABLFirstLienLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">ABL first-lien loan.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ABLFirstLienLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">A B L First Lien Loan [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ABLFirstLienLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">ABL First-Lien Loan</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueAprilTwoThousandTwentyFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Loan due 4/2024</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueAprilTwoThousandTwentyFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First-lien Loan Due April Two Thousand Twenty Four.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueAprilTwoThousandTwentyFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due April Two Thousand Twenty Four [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueDecemberTwoThousandTwentyOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Loan due 12/2021</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueDecemberTwoThousandTwentyOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due December Two Thousand Twenty One [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueDecemberTwoThousandTwentyOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First lien loan due december two thousand twenty one.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Earnings Per Share [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_EquityAndOtherInvestmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Equity and Other Investments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_EquityAndOtherInvestmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Equity and other investments.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_EquityAndOtherInvestmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Equity And Other Investments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestReceivable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Receivable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestReceivable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest receivable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_RealizedCapitalGainsAccruedBeginningAprilFirstTwoThousandFourteenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Realized capital gains accrued beginning April 1, 2014.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_RealizedCapitalGainsAccruedBeginningAprilFirstTwoThousandFourteenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Realized Capital Gains Accrued Beginning April First Two Thousand Fourteen [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_RealizedCapitalGainsAccruedBeginningAprilFirstTwoThousandFourteenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Realized Capital Gains Accrued Beginning April 1, 2014</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetRecurringBasisStillHeldUnrealizedGainLossStatementOfIncomeExtensibleList_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Asset, Recurring Basis, Still Held, Unrealized Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementOfFinancialPositionAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Statement of Financial Position [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DividendsDeclaredTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Dividends Declared</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DividendsDeclaredTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Dividends Declared [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_RisksRelatedToEconomicConditionsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Risks Related to Economic Conditions.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_RisksRelatedToEconomicConditionsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Risks Related to Economic Conditions [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ManagementFeesGrossOfWaivers_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Management fees gross of waivers.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ManagementFeesGrossOfWaivers_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Management Fees Gross of Waivers</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ManagementFeesGrossOfWaivers_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Management fees gross of waivers</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharesIssuedPricePerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Shares issued, price per share</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharesIssuedPricePerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Shares Issued, Price Per Share</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestExpenseOperating_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestExpenseOperating_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Expense, Operating</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestExpenseOperating_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Interest Expense, Operating, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AblFirstLienLoanDueAugustTwoThousandTwentyFiveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">ABL First-lien Loan due 8/2025</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AblFirstLienLoanDueAugustTwoThousandTwentyFiveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">ABL First Lien Loan Due August Two Thousand Twenty Five [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AblFirstLienLoanDueAugustTwoThousandTwentyFiveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">ABL first lien loan due august two thousand twenty five.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueOctoberTwoThousandTwentyFourFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First lien loan due October two thousand twenty four four.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueOctoberTwoThousandTwentyFourFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due October Two Thousand Twenty Four Four [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueOctoberTwoThousandTwentyFourFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien loan($35,000par,due10/2024)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LetterOfCreditMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Letter of Credit</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LetterOfCreditMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Letter of Credit [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityShellCompany_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Shell Company</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_O2024Q3DividendsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">O 2024 Q3 Dividends [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_O2024Q3DividendsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">O 2024 Q3 Dividends.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_O2024Q3DividendsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">O2024 Q3 Dividends [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueJulyTwoThousandTwentyFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Loan ($13,848 par, Due 7/2024)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueJulyTwoThousandTwentyFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First-lien Loan Due July Two Thousand Twenty Four.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueJulyTwoThousandTwentyFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due July Two Thousand Twenty Four [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Measurement Inputs and Valuation Techniques [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value of Level 3 Investments at Fair Value Significant Unobservable Inputs Used in Valuations</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInAccruedInterestReceivableNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Increase (Decrease) in Accrued Interest Receivable, Net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInAccruedInterestReceivableNet_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Interest receivable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityTaxIdentificationNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Tax Identification Number</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Assets [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueAprilTwoThousandTwentyFourOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First lien loan due April two thousand twenty four one.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueAprilTwoThousandTwentyFourOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due April Two Thousand Twenty Four One [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueAprilTwoThousandTwentyFourOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien loan($11,205par,due4/2024)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AVSCHoldingCorpMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">AVSC Holding Corp [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AVSCHoldingCorpMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">AVSC Holding Corp.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AVSCHoldingCorpMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">AVSC Holding Corp</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueAugustTwoThousandTwentyThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Loan due 8/2023</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueAugustTwoThousandTwentyThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due August Two Thousand Twenty Three [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueAugustTwoThousandTwentyThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First lien loan due August two thousand twenty three.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_OffsettingAssetsAndLiabilitiesPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Offsetting assets and liabilities.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_OffsettingAssetsAndLiabilitiesPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Offsetting Assets And Liabilities [Policy Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_OffsettingAssetsAndLiabilitiesPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Offsetting Assets and Liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityCurrentReportingStatus_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Current Reporting Status</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueSeptemberTwoThousandTwentySixFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First Lien loan due September two thousand twenty six four.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueSeptemberTwoThousandTwentySixFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due September Two Thousand Twenty Six Four [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueSeptemberTwoThousandTwentySixFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien loan ($68,160 par, due 9/2026)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_DividendsPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Dividends [Policy Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_DividendsPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Dividends.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_DividendsPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Dividends to Common Shareholders</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentCompanyExpenseRatioAfterIncentiveAllocation_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Ratio of net expenses to average net assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentCompanyExpenseRatioAfterIncentiveAllocation_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment Company, Expense Ratio after Incentive Allocation</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueJulyTwoThousandTwentyFiveOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First lien loan due July two thousand twenty five one.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueJulyTwoThousandTwentyFiveOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due July Two Thousand Twenty Five One [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueJulyTwoThousandTwentyFiveOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien loan($50,332par,due7/2025)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InterestRateSwapSevenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Interest rate swap seven.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InterestRateSwapSevenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Rate Swap Seven [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InterestRateSwapSevenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest Rate Swap Seven</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCreditFacilityInterestRateDuringPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Line of Credit Facility, Interest Rate During Period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCreditFacilityInterestRateDuringPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienDebtInvestmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First-lien debt investments.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienDebtInvestmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Debt Investments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienDebtInvestmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Debt Investments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentAcquisitionDate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Initial Acquisition Date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentAcquisitionDate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment, Acquisition Date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentOwnedAtCost_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Amortized Cost</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentOwnedAtCost_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Investments at amortized cost</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentOwnedAtCost_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment Owned, Cost</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Subsequent Events [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_SegmentGeographicalDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Geographical</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_SegmentGeographicalDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Geographical [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentFiscalYearFocus_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Document Fiscal Year Focus</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentCompanyIncentiveFeeToAverageNetAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment Company, Incentive Fee to Average Net Assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentCompanyIncentiveFeeToAverageNetAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Portfolio turnover</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ChangeInAccountingPrincipleAccountingStandardsUpdateAdoptionDate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Change in Accounting Principle, Accounting Standards Update, Adoption Date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ChangeInAccountingPrincipleAccountingStandardsUpdateAdoptionDate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Change in accounting principle, accounting standards update, adoption date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherGeneralAndAdministrativeExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other General and Administrative Expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherGeneralAndAdministrativeExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other general and administrative</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FederalIncomeTaxRisksMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Federal Income Tax Risks.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FederalIncomeTaxRisksMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Federal Income Tax Risks [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfPreIncentiveFeeNetInvestmentIncomePayableQuarterly_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Percentage of pre-incentive fee net investment income payable quarterly.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfPreIncentiveFeeNetInvestmentIncomePayableQuarterly_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Percentage Of Pre Incentive Fee Net Investment Income Payable Quarterly</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfPreIncentiveFeeNetInvestmentIncomePayableQuarterly_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of total pre-Incentive fee net investment income payable quarterly</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_OtherIncomePolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Other income.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_OtherIncomePolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Income [Policy Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_OtherIncomePolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other Income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TreasuryStockValueAcquiredCostMethod_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Purchases of treasury stock</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TreasuryStockValueAcquiredCostMethod_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Total cost</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TreasuryStockValueAcquiredCostMethod_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Purchases of treasury stock</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TreasuryStockValueAcquiredCostMethod_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Treasury Stock, Value, Acquired, Cost Method</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Cash, Cash Equivalents and Restricted Cash, End of Period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Cash, cash equivalents and restricted cash, beginning of period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienRevolvingLoanAprilTwoThousandTwentyFiveOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Revolving Loan due 4/2025</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienRevolvingLoanAprilTwoThousandTwentyFiveOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First-lien Revolving Loan April Two Thousand Twenty Five One.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienRevolvingLoanAprilTwoThousandTwentyFiveOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Revolving Loan April Two Thousand Twenty Five One [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_CityAreaCode_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">City Area Code</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoansDueDecemberTwoThousandTwentyFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First-lien Loans Due December Two Thousand Twenty Four.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoansDueDecemberTwoThousandTwentyFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loans Due December Two Thousand Twenty Four [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoansDueDecemberTwoThousandTwentyFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien loan ($8,775 par, due 12/2024)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_EquityAndOtherInvestments_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Equity and other investments.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_EquityAndOtherInvestments_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Equity And Other Investments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_EquityAndOtherInvestments_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Equity and other investments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ErlingLuxBidcoSarlMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Erling Lux Bidco SARL.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ErlingLuxBidcoSarlMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Erling Lux Bidco SARL [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ErlingLuxBidcoSarlMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Erling Lux Bidco SARL</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LettersOfCreditOutstandingAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Letters of Credit Outstanding, Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LettersOfCreditOutstandingAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Issuance of letters of credit</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeContractTypeDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative Contract [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeContractTypeDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Derivative Contract</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_BenNevisMidcoLimitedMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Ben Nevis Midco Limited [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_BenNevisMidcoLimitedMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Ben nevis midco limited</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_BenNevisMidcoLimitedMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Ben Nevis Midco Limited</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Line of Credit Facility, Unused Capacity, Commitment Fee Percentage</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Line of credit facility, undrawn amount percentage</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentOwnedUnderlyingFaceAmountAtMarketValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Investment, par</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentOwnedUnderlyingFaceAmountAtMarketValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment Owned, Face Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IncomeTaxesIncludingExciseTaxesPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Income taxes, including excise taxes.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IncomeTaxesIncludingExciseTaxesPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Income Taxes Including Excise Taxes [Policy Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IncomeTaxesIncludingExciseTaxesPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Income Taxes, Including Excise Taxes</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Organization, Consolidation and Presentation of Financial Statements [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_LocalPhoneNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Local Phone Number</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InterestRateSwapElevenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Interest rate swap eleven.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InterestRateSwapElevenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Rate Swap Eleven [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InterestRateSwapElevenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest Rate Swap Eleven</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_StructuredProductDueJanuaryTwoThousandThirtyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Structured product due January two thousand thirty.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_StructuredProductDueJanuaryTwoThousandThirtyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Structured Product Due January Two Thousand Thirty [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_StructuredProductDueJanuaryTwoThousandThirtyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Structured Product Due January Two Thousand Thirty</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Preferred Stock, Shares Outstanding, Ending Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Preferred Stock, Shares Outstanding, Beginning Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Preferred Stock, Shares Outstanding</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Preferred stock, shares outstanding</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_CrewlineBuyerIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Crewline Buyer, Inc.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_CrewlineBuyerIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Crewline Buyer, Inc [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_CrewlineBuyerIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Crewline Buyer, Inc.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanOneDueMarchTwoThousandTwentyFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien loan ($37,500 par, due 3/2024)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanOneDueMarchTwoThousandTwentyFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan one Due March Two Thousand Twenty Four [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanOneDueMarchTwoThousandTwentyFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First Lien Loan one Due March Two Thousand Twenty Four.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncentiveFeeExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Incentive Fee Expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncentiveFeeExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Incentive fees</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_RealizedCapitalGainsAccruedPriorToMarchThirtyFirstTwoThousandFourteenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Realized capital gains accrued prior to March 31, 2014.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_RealizedCapitalGainsAccruedPriorToMarchThirtyFirstTwoThousandFourteenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Realized Capital Gains Accrued Prior To March Thirty First Two Thousand Fourteen [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_RealizedCapitalGainsAccruedPriorToMarchThirtyFirstTwoThousandFourteenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Realized Capital Gains Accrued Prior to March 31, 2014</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_HedgingDesignationAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Hedging Designation [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_HedgingDesignationAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Hedging Designation</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeTaxAuthorityAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Income Tax Jurisdiction [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueDisclosureOfAssetAndLiabilityNotMeasuredAtFairValueTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Disclosure of Asset and Liability Not Measured at Fair Value [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueDisclosureOfAssetAndLiabilityNotMeasuredAtFairValueTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value Disclosure Of Asset And Liability Not Measured At Fair Value [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RealizedInvestmentGainsLossesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Realized Investment Gains (Losses) [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RealizedInvestmentGainsLossesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Realized gains (losses):</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommitmentsAndContingenciesDisclosureAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Commitments and Contingencies Disclosure [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfIncentiveFeeRate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Incentive fee rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfIncentiveFeeRate_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Percentage of incentive fee rate.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfIncentiveFeeRate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Percentage Of Incentive Fee Rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FederalFundsEffectiveSwapRateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fed Funds Effective Rate Overnight Index Swap Rate [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FederalFundsEffectiveSwapRateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Federal Funds Rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="country_IT_lbl" xlink:role="http://www.xbrl.org/2003/role/label">ITALY</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="country_IT_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Italy</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredFinanceCostsNet_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Deferred financing costs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredFinanceCostsNet_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Debt Issuance Costs, Net, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredFinanceCostsNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Issuance Costs, Net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredFinanceCostsNet_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Deferred financing costs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Debt Securities, Available-for-Sale, Amortized Cost, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale, Amortized Cost</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Amortized Cost</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueDecemberTwoThousandTwentyFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Loan due 12/2024</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueDecemberTwoThousandTwentyFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First-lien Loan Due December Two Thousand Twenty Four.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueDecemberTwoThousandTwentyFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due December Two Thousand Twenty Four [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProfessionalFees_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Professional Fees</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProfessionalFees_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Professional fees</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueOctoberTwoThousandTwentyFourOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Loan due 10/2024</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueOctoberTwoThousandTwentyFourOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First-lien Loan Due October Two Thousand Twenty Four One.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueOctoberTwoThousandTwentyFourOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due October Two Thousand Twenty Four One [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeTaxAuthorityDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Income Tax Jurisdiction [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentInterestRateStatedPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Stated interest rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentInterestRateStatedPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument, Interest Rate, Stated Percentage</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentInterestRateStatedPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt instrument, interest rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PledgedStatusDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Pledged Status [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PledgedStatusDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Pledged Status</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RetainedEarningsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Retained Earnings [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RetainedEarningsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Distributable Earnings</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OverAllotmentOptionMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Over-Allotment Option [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OverAllotmentOptionMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Overallotment Option</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_DeferredOrganizationCosts_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Deferred organization costs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_DeferredOrganizationCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Deferred Organization Costs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_DeferredOrganizationCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Deferred organization costs.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_DeferredOrganizationCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Deferred organizational costs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentTransitionReport_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Document Transition Report</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_TwoThousandTwentySixNotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Two thousand twenty six notes.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_TwoThousandTwentySixNotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Two Thousand Twenty Six Notes [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_TwoThousandTwentySixNotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2026 Notes</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueRecurringBasisUnobservableInputReconciliationAssetGainLossStatementOfIncomeExtensibleList_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SummaryOfSharesNewlyIssuedToShareholdersWhoHaveNotOptedOutOfDividendReinvestmentPlanTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Shares Newly Issued to Shareholders Who Have Not Opted Out of Dividend Reinvestment Plan</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SummaryOfSharesNewlyIssuedToShareholdersWhoHaveNotOptedOutOfDividendReinvestmentPlanTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Summary of Shares Newly Issued to Shareholders Who Have Not Opted Out of Dividend Reinvestment Plan [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SummaryOfSharesNewlyIssuedToShareholdersWhoHaveNotOptedOutOfDividendReinvestmentPlanTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Summary of shares newly issued to shareholders who have not opted out of dividend reinvestment plan.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueOctoberTwoThousandTwentyEightOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First lien loan due october two thousand twenty eight one.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueOctoberTwoThousandTwentyEightOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due October Two Thousand Twenty Eight One [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueOctoberTwoThousandTwentyEightOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Loan due 10/2028</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ValuationTechniqueDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Valuation Approach and Technique [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ValuationTechniqueDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Valuation Approach and Technique</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ArrowbuyerIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Arrow Buyer, Inc.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ArrowbuyerIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">ArrowBuyer, Inc. [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ArrowbuyerIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Arrow Buyer, Inc.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First-lien loan.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-Lien Loan</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_OrganizationPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Organization policy.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_OrganizationPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Organization [Policy Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_OrganizationPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Organization</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_OtherIncomeForTaxPurposesNotBook_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Income For Tax Purposes, Not Book</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_OtherIncomeForTaxPurposesNotBook_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Other income for tax purposes, not book.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_OtherIncomeForTaxPurposesNotBook_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other income (loss) for tax purposes, not book</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Deferred financing costs and original issue discounts</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MinimumMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Minimum [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MinimumMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Minimum</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UnrealizedGainLossOnInvestments_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Non-controlled, non-affiliated investments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UnrealizedGainLossOnInvestments_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Net Change In Unrealized Gain/(Loss)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UnrealizedGainLossOnInvestments_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Unrealized gains (losses) on investments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UnrealizedGainLossOnInvestments_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Net change in unrealized (gains) losses on investments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueMarchTwoThousandTwentyFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First lien loan due March two thousand twenty four.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueMarchTwoThousandTwentyFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due March Two Thousand Twenty Four [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueMarchTwoThousandTwentyFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien loan ($30,000 par, due 3/2024)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Common Share</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Common Shares</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common Stock</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RestrictedCash_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Restricted Cash, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RestrictedCash_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Restricted Cash</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RestrictedCash_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Restricted cash</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueFebruaryTwoThousandTwentySixMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Loan ($49,328 par, Due 2/2026)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueFebruaryTwoThousandTwentySixMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First-lien Loan Due February Two Thousand Twenty Six.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueFebruaryTwoThousandTwentySixMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due February Two Thousand Twenty Six [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment, Name [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdditionalPaidInCapitalMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Additional Paid-in Capital [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdditionalPaidInCapitalMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Paid in Capital in Excess of Par</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentCompanyInvestmentIncomeLossRatio_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment Company, Investment Income (Loss) Ratio</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentCompanyInvestmentIncomeLossRatio_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Ratio of net investment income to average net assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AblDipTermLoanDueAprilTwoThousandTwentyOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">ABL DIP term loan due 4/2021</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AblDipTermLoanDueAprilTwoThousandTwentyOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">ABL DIP Term Loan Due April Two Thousand Twenty One [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AblDipTermLoanDueAprilTwoThousandTwentyOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">ABL DIP term loan due april two thousand twenty one.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromShortTermDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Proceeds from Short-Term Debt, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromShortTermDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Proceeds from Short-Term Debt</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromShortTermDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Borrowings on debt</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ForeignCurrencyTransactionsAndTranslationsPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Foreign Currency Transactions and Translations Policy [Policy Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ForeignCurrencyTransactionsAndTranslationsPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Foreign Currency</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Adjustments to reconcile increase (decrease) in net assets resulting from operations to net cash provided by (used in) operating activities:</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_EducationMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Education.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_EducationMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Education [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_EducationMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Education</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SummaryOfGeographicCompositionOfInvestmentsAtFairValueTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Summary of geographic composition of investments at fair value.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SummaryOfGeographicCompositionOfInvestmentsAtFairValueTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Summary Of Geographic Composition Of Investments At Fair Value [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SummaryOfGeographicCompositionOfInvestmentsAtFairValueTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Geographic Composition of Investments at Fair Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueJuneTwoThousandTwentySixOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Loan due 6/2026</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueJuneTwoThousandTwentySixOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First-lien Loan Due June Two Thousand Twenty Six One.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueJuneTwoThousandTwentySixOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due June Two Thousand Twenty Six One [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeStatementLocationDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Statement of Income Location, Balance [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeStatementLocationDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Income Statement Location</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InterestRateSwapFiveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Interest rate swap five.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InterestRateSwapFiveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Rate Swap Five [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InterestRateSwapFiveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest Rate Swap Five</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AssetCoveragePercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Asset coverage percentage.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AssetCoveragePercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Asset Coverage Percentage</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AssetCoveragePercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Asset coverage percentage</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ABLFILOTermLoanDueAprilTwoThousandTwentyFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">ABL FILO Term Loan due 4/2024</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ABLFILOTermLoanDueAprilTwoThousandTwentyFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">ABL FILO Term Loan Due April Two Thousand Twenty Four.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ABLFILOTermLoanDueAprilTwoThousandTwentyFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">A B L F I L O Term Loan Due April Two Thousand Twenty Four [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueMayTwoThousandTwentyEightOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First lien loan due may two thousand twenty eight one.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueMayTwoThousandTwentyEightOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due May Two Thousand Twenty Eight One [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueMayTwoThousandTwentyEightOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien loan($12,669par,due5/2028)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Repayments / redemptions</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ConvertibleNoteDueMayTwoThousandTwentyEightMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Convertible Note due 5/2028</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ConvertibleNoteDueMayTwoThousandTwentyEightMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Convertible Note Due May Two Thousand Twenty Eight.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ConvertibleNoteDueMayTwoThousandTwentyEightMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Convertible Note Due May Two Thousand Twenty Eight [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_MidwestMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Midwest.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_MidwestMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Midwest [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_MidwestMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">United States - Midwest</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Increase (Decrease) in Other Operating Liabilities, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Increase (Decrease) in Other Operating Liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IncreaseDecreaseInInterestReceivablePaidInKind_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Increase decrease in interest receivable paid-in-kind.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IncreaseDecreaseInInterestReceivablePaidInKind_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Increase Decrease In Interest Receivable Paid In Kind</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IncreaseDecreaseInInterestReceivablePaidInKind_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest receivable paid-in-kind</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsOfFinancingCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Payments of Financing Costs, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsOfFinancingCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Payments of Financing Costs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsOfFinancingCosts_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Deferred financing costs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentCompanyRealizedAndUnrealizedGainLossOnInvestmentAndForeignCurrency_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Total unrealized and realized gains (losses)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentCompanyRealizedAndUnrealizedGainLossOnInvestmentAndForeignCurrency_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Gain (Loss), Investment and Derivative, Operating, and Foreign Currency Transaction, before Tax</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentCompanyRealizedAndUnrealizedGainLossOnInvestmentAndForeignCurrency_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total Net Unrealized and Realized Gains (Losses)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IncentiveFeesAccruedRelatedToCumulativeUnrealizedCapitalGains_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Incentive fees accrued</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IncentiveFeesAccruedRelatedToCumulativeUnrealizedCapitalGains_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Incentive Fees Accrued Related to Cumulative Unrealized Capital Gains</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IncentiveFeesAccruedRelatedToCumulativeUnrealizedCapitalGains_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Incentive fees accrued related to cumulative unrealized capital gains.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InterestRateSwapNineMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Interest rate swap nine.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InterestRateSwapNineMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Rate Swap Nine [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InterestRateSwapNineMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest Rate Swap Nine</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ForeignCurrencyTransactionGainLossRealized_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Realized Gain (Loss), Foreign Currency Transaction, before Tax</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ForeignCurrencyTransactionGainLossRealized_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Foreign currency transactions</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ForeignCurrencyTransactionGainLossRealized_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Transfers</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ForeignCurrencyTransactionGainLossRealized_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Net realized (gains) losses on foreign currency transactions</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityCommonStockSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Common Stock, Shares Outstanding</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_O2023Q3DividendsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">O 2023 Q3 Dividends [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_O2023Q3DividendsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">O 2023 Q3 Dividends.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_O2023Q3DividendsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">O2023 Q3 Dividends [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BasisOfAccountingPolicyPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Basis of Accounting, Policy [Policy Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BasisOfAccountingPolicyPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Basis of Presentation</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentBasisSpreadVariableRate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Reference Rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentBasisSpreadVariableRate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment, Basis Spread, Variable Rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_TotalReturnBasedOnNetAssetValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Total return based on net asset value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_TotalReturnBasedOnNetAssetValue_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Total Return Based On Net Asset Value.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_TotalReturnBasedOnNetAssetValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Total Return Based On Net Asset Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_ScenarioUnspecifiedDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Scenario [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_ScenarioUnspecifiedDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Scenario</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueOctoberTwoThousandTwentyEightMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First-lien Loan Due October Two Thousand Twenty Eight.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueOctoberTwoThousandTwentyEightMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due October Two Thousand Twenty Eight [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueOctoberTwoThousandTwentyEightMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Loan due 10/2028</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueMayTwoThousandTwentyFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Loan ($15,000 par, Due 5/2024)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueMayTwoThousandTwentyFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First-lien Loan Due May Two Thousand Twenty Four.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueMayTwoThousandTwentyFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due May Two Thousand Twenty Four [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AdministrationAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Administration agreement.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AdministrationAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Administration Agreement [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AdministrationAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Administration Agreement</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IncreaseDecreaseInManagementFeesPayableToAffiliate_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Increase decrease in management fees payable to affiliate.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IncreaseDecreaseInManagementFeesPayableToAffiliate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Increase Decrease In Management Fees Payable To Affiliate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IncreaseDecreaseInManagementFeesPayableToAffiliate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Management fees payable to affiliate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock, Value, Issued</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common shares, $0.001 par value; unlimited shares authorized (140,208,028 and 65,478,775, shares issued and outstanding, respectively)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_OrganizationAndOfferingExpensesPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Organization and offering expenses.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_OrganizationAndOfferingExpensesPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Organization and Offering Expenses [Policy Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_OrganizationAndOfferingExpensesPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Organization and Offering Expenses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_CostModelMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Cost model.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_CostModelMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cost Model [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_CostModelMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cost Model</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="country_FI_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Finland</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="country_FI_lbl" xlink:role="http://www.xbrl.org/2003/role/label">FINLAND</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SummaryOfTaxCharacterOfShareholderDistributionsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Tax Character of Shareholder Distributions</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SummaryOfTaxCharacterOfShareholderDistributionsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Summary Of Tax Character Of Shareholder Distributions [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SummaryOfTaxCharacterOfShareholderDistributionsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Summary of tax character of shareholder distributions.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueAprilTwoThousandTwentyFiveThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First lien loan due April two thousand twenty five three.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueAprilTwoThousandTwentyFiveThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due April Two Thousand Twenty Five Three [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueAprilTwoThousandTwentyFiveThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien loan ($17,412 par, due 4/2025)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_BlackScholesModelMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Black Scholes Model</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_BlackScholesModelMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Black Scholes Model [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_BlackScholesModelMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Black Scholes model.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentIncomeInterest_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment Income, Interest</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentIncomeInterest_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest from investments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentIncomeInterest_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Interest Income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_MarketingServicesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Marketing Services.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_MarketingServicesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Marketing Services [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_MarketingServicesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Marketing Services</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentCompanyIncentiveAllocationToAverageNetAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Ratio of net expenses to average net assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentCompanyIncentiveAllocationToAverageNetAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment Company, Incentive Allocation to Average Net Assets, Percentage</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="country_SE_lbl" xlink:role="http://www.xbrl.org/2003/role/label">SWEDEN</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="country_SE_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Sweden</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InvestmentCompanyNetCommonShareIssuancePerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Investment company net common share issuance per share.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InvestmentCompanyNetCommonShareIssuancePerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment Company Net Common Share Issuance Per Share</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InvestmentCompanyNetCommonShareIssuancePerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net Common Share Issuance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ManagementFeesWaived_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Management fees waived.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ManagementFeesWaived_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Management Fees Waived</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ManagementFeesWaived_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Management fees waived (Note 3)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Investments at Fair Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MarketApproachValuationTechniqueMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Valuation, Market Approach [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MarketApproachValuationTechniqueMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Market Multiple</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommitmentsAndContingencies_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Commitments and Contingencies</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommitmentsAndContingencies_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Commitments and contingencies (Note 7)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueJuneTwoThousandTwentySixThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First lien loan due June two thousand twenty six three.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueJuneTwoThousandTwentySixThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due June Two Thousand Twenty Six Three [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueJuneTwoThousandTwentySixThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien loan($27,375par,due6/2026)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueNetAssetLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Fair Value, Net Asset (Liability), Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueNetAssetLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Net Asset (Liability)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueNetAssetLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net assets, end of period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Denominator for diluted weighted average shares</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Weighted average shares of Common Shares outstanding-diluted</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted average common shares outstanding-diluted</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Weighted average Common Shares outstanding-diluted</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SignificantAccountingPoliciesTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Significant Accounting Policies [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SignificantAccountingPoliciesTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Significant Accounting Policies</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_LaramieEnergyLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Laramie Energy, LLC</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_LaramieEnergyLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Laramie Energy L L C [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_LaramieEnergyLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Laramie Energy LLC.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="cyd_CybersecurityRiskManagementThirdPartyEngagedFlag_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cybersecurity Risk Management Third Party Engaged [Flag]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net realized gains (losses)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueOctoberTwoThousandTwentyFiveOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Loan ($47,999 par, Due 10/2025)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueOctoberTwoThousandTwentyFiveOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First-lien Loan Due October Two Thousand Twenty Five One.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueOctoberTwoThousandTwentyFiveOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due October Two Thousand Twenty Five One [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SlBuyerCorpMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">SL Buyer Corp</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SlBuyerCorpMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">SL Buyer Corp [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SlBuyerCorpMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">SL Buyer Corp.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_CoupaHoldingsLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Coupa Holdings, LLC</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_CoupaHoldingsLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Coupa Holdings L L C [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_CoupaHoldingsLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Coupa Holdings LLC.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IncentiveFeesOnNetCapitalGainsAccruedToAffiliate_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Incentive fees on net capital gains accrued to affiliate.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IncentiveFeesOnNetCapitalGainsAccruedToAffiliate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Incentive Fees On Net Capital Gains Accrued To Affiliate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IncentiveFeesOnNetCapitalGainsAccruedToAffiliate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Incentive fees on net capital gains accrued to affiliate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SignificantAccountingPoliciesLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Significant accounting policies.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SignificantAccountingPoliciesLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Significant Accounting Policies [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntitySmallBusiness_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Small Business</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="cyd_CybersecurityRiskManagementProcessesForAssessingIdentifyingAndManagingThreatsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cybersecurity Risk Management Processes for Assessing, Identifying, and Managing Threats [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Average 1-month LIBOR rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Instrument, basis spread on variable rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument, Basis Spread on Variable Rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SecuredOvernightFinancingRateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">SOFR</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SecuredOvernightFinancingRateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Secured Overnight Financing Rate [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SecuredOvernightFinancingRateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Secured Overnight Financing Rate.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Disclosure [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_DividendsPayableDateOfSharesIssuedDayMonthAndYear_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Dividends payable date of shares issued day month and year.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_DividendsPayableDateOfSharesIssuedDayMonthAndYear_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Dividends Payable Date Of Shares Issued Day Month And Year</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_DividendsPayableDateOfSharesIssuedDayMonthAndYear_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Dividends date shares issued</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_WranglerTopcoLlcMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Wrangler TopCo, LLC</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_WranglerTopcoLlcMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Wrangler TopCo, LLC [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_WranglerTopcoLlcMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Wrangler TopCo, LLC.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentsFairValueDisclosure_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investments, Fair Value Disclosure</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentsFairValueDisclosure_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total investments at fair value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TreasuryStockSharesAcquired_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Purchases of treasury stock, Shares</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TreasuryStockSharesAcquired_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Number of shares repurchased</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TreasuryStockSharesAcquired_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Purchases of treasury stock, Shares</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TreasuryStockSharesAcquired_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Treasury Stock, Shares, Acquired</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueNovemberTwoThousandTwentySevenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Loan due 11/2027</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueNovemberTwoThousandTwentySevenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First-lien Loan Due November Two Thousand Twenty Seven.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueNovemberTwoThousandTwentySevenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due November Two Thousand Twenty Seven [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ConvertibleNoteDueMayTwoThousandTwentyEightOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Convertible note due may two thousand twenty eight one.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ConvertibleNoteDueMayTwoThousandTwentyEightOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Convertible Note Due May Two Thousand Twenty Eight One [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ConvertibleNoteDueMayTwoThousandTwentyEightOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Convertible note ($4,124par,due5/2028)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_HirevueIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Hirevue, Inc.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_HirevueIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Hirevue, Inc [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_HirevueIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Hirevue, inc member.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsForHedgeInvestingActivities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Payments for Hedge, Investing Activities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsForHedgeInvestingActivities_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Paid</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CreditFacilityAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Credit Facility [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CreditFacilityAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Credit Facility</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RevolvingCreditFacilityMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Revolving Credit Facility [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RevolvingCreditFacilityMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Revolving Credit Facility</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiscalPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fiscal Year End</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiscalPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fiscal Period, Policy [Policy Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accretion (Amortization) of Discounts and Premiums, Investments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Net amortization of discount on investments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueAugustTwoThousandTwentyFiveTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First lien loan due august two thousand twenty five two.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueAugustTwoThousandTwentyFiveTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due August Two Thousand Twenty Five Two [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueAugustTwoThousandTwentyFiveTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien loan ($64,435 par, due 8/2025)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienRevolvingLoanAprilTwoThousandTwentyFiveThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First lien revolving loan April two thousand twenty five three.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienRevolvingLoanAprilTwoThousandTwentyFiveThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Revolving Loan April Two Thousand Twenty Five Three [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienRevolvingLoanAprilTwoThousandTwentyFiveThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien revolving loan (EUR 336 par, due 4/2025)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InterestRateSwapThirteenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest Rate Swap Thirteen</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InterestRateSwapThirteenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Interest rate swap thirteen.</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueOctoberTwoThousandTwentyNineMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due October Two Thousand Twenty Nine [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueOctoberTwoThousandTwentyNineMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Loan due 10/2029</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_CapitalCommitmentReceivedFormInvestors_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Capital commitment received form investors.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_CapitalCommitmentReceivedFormInvestors_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Capital Commitment Received form Investors</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_CapitalCommitmentReceivedFormInvestors_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Capital commitment received form investors</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Net Cash Provided by (Used in) Financing Activities [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cash Flows from Financing Activities</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Liabilities [Abstract]</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ExciseAndOtherTaxesPaidDuringThePeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Excise and other taxes paid during the period.</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ExciseAndOtherTaxesPaidDuringThePeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Excise and other taxes paid during the period</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueAprilTwoThousandTwentyFiveOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Loan due 4/2025</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueAprilTwoThousandTwentyFiveOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First-lien Loan Due April Two Thousand Twenty Five One.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueAprilTwoThousandTwentyFiveOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due April Two Thousand Twenty Five One [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCreditFacilityCommitmentFeePercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Line of Credit Facility, Commitment Fee Percentage</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueInputsLevel3Member_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Level 3</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_OtherMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Other.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_OtherMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_OtherMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_JanuaryTwoThousandThirtyNotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">January Two Thousand Thirty Notes [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_JanuaryTwoThousandThirtyNotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">January two thousand thirty notes.</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Sale Proceeds</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Sales proceeds</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MeasurementInputComparabilityAdjustmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Measurement Input, Comparability Adjustment [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MeasurementInputComparabilityAdjustmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Comparable Multiple</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ABLFILOTermLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">ABL FILO Term Loan ($5,732 par, Due 9/2022)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ABLFILOTermLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">ABL FILO term loan.</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ChangeInAccountingPrincipleAccountingStandardsUpdateImmaterialEffect_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Change in Accounting Principle, Accounting Standards Update, Immaterial Effect [true false]</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherNonoperatingIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Nonoperating Income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherNonoperatingIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherNonoperatingIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Other Income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="country_NL_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Netherlands</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="country_NL_lbl" xlink:role="http://www.xbrl.org/2003/role/label">NETHERLANDS</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AlternativeInvestment_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AlternativeInvestment_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Alternative Investment</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueDecemberTwoThousandTwentyFiveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Loan (AUD 17,400 par, Due 12/2025)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueDecemberTwoThousandTwentyFiveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First-lien Loan Due December Two Thousand Twenty Five.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueDecemberTwoThousandTwentyFiveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due December Two Thousand Twenty Five [Member]</link:label>
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  <xsd:element id="ck0001925309_BtrsHoldingIncMember" name="BtrsHoldingIncMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_EstimatedGrossUnrealizedLossOnTaxCostInvestment" name="EstimatedGrossUnrealizedLossOnTaxCostInvestment" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ck0001925309_CapitalCommitmentReceivedFormInvestors" name="CapitalCommitmentReceivedFormInvestors" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueMarchTwoThousandTwentySixMember" name="FirstLienLoanDueMarchTwoThousandTwentySixMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienLoanOneDueOctoberTwoThousandTwentyTwoMember" name="FirstLienLoanOneDueOctoberTwoThousandTwentyTwoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienRevolvingLoanOctoberTwoThousandTwentyFiveMember" name="FirstLienRevolvingLoanOctoberTwoThousandTwentyFiveMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_SouthMember" name="SouthMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_IncreaseDecreaseInDistributableEarnings" name="IncreaseDecreaseInDistributableEarnings" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ck0001925309_InterestRateSwapFiveMember" name="InterestRateSwapFiveMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_OutsystemsLuxcoSarlMember" name="OutsystemsLuxcoSarlMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_NumberOfInvestments" name="NumberOfInvestments" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001925309_FirstLienNoteDueJuneTwoThousandTwentyFourMember" name="FirstLienNoteDueJuneTwoThousandTwentyFourMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_IncrementalTermLoanMember" name="IncrementalTermLoanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_EducationMember" name="EducationMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueDecemberTwoThousandTwentyEightOneMember" name="FirstLienLoanDueDecemberTwoThousandTwentyEightOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_OriginalIssueDiscountNetOfAccretion" name="OriginalIssueDiscountNetOfAccretion" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ck0001925309_AdministrationAgreementMember" name="AdministrationAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_BtrsHoldingsIncMember" name="BtrsHoldingsIncMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueJulyTwoThousandTwentyFiveMember" name="FirstLienLoanDueJulyTwoThousandTwentyFiveMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_OtherMember" name="OtherMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_ConvertibleNoteDueMayTwoThousandTwentyFiveMember" name="ConvertibleNoteDueMayTwoThousandTwentyFiveMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPaidInKindInterest" name="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPaidInKindInterest" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ck0001925309_EquityAndOtherInvestments" name="EquityAndOtherInvestments" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ck0001925309_FlightIntermediateHoldCoIncMember" name="FlightIntermediateHoldCoIncMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_SecuredOvernightFinancingRateMember" name="SecuredOvernightFinancingRateMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_BedBathAndBeyondIncMember" name="BedBathAndBeyondIncMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueDecemberTwoThousandTwentyEightMember" name="FirstLienLoanDueDecemberTwoThousandTwentyEightMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_ArrowheadPharmaceuticalsIncMember" name="ArrowheadPharmaceuticalsIncMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienRevolvingLoanDueAugustTwoThousandTwentyThreeMember" name="FirstLienRevolvingLoanDueAugustTwoThousandTwentyThreeMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_ABLFILOTermLoanMember" name="ABLFILOTermLoanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienLoansDueDecemberTwoThousandTwentyFourMember" name="FirstLienLoansDueDecemberTwoThousandTwentyFourMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_CapitalCall" name="CapitalCall" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ck0001925309_HeritageEnvironmentalServicesIncMember" name="HeritageEnvironmentalServicesIncMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_HotelGamingAndLeisureMember" name="HotelGamingAndLeisureMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_PercentageOfPreIncentiveFeeNetInvestmentIncomeQuarterlyAfterCatchUpAchieved" name="PercentageOfPreIncentiveFeeNetInvestmentIncomeQuarterlyAfterCatchUpAchieved" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001925309_MinimumPercentageOfVotingSecuritiesInInvestmentPortfolio" name="MinimumPercentageOfVotingSecuritiesInInvestmentPortfolio" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001925309_PercentageOfCapitalGainIncentiveFeeSubsequentToExchangeListing" name="PercentageOfCapitalGainIncentiveFeeSubsequentToExchangeListing" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001925309_BusinessServicesMember" name="BusinessServicesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueDecemberTwoThousandTwentySixTwoMember" name="FirstLienLoanDueDecemberTwoThousandTwentySixTwoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_RisksRelatedToOurPortfolioCompanyInvestmentsMember" name="RisksRelatedToOurPortfolioCompanyInvestmentsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_ApellisPharmaceuticalsIncMember" name="ApellisPharmaceuticalsIncMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_TwoThousandTwentyTwoConvertibleNotesMember" name="TwoThousandTwentyTwoConvertibleNotesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienLoanOneDueJulyTwoThousandTwentyFourMember" name="FirstLienLoanOneDueJulyTwoThousandTwentyFourMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_TwoThousandTwentyThreeTwentyFourTwentySixAndTwentyEightNotesMember" name="TwoThousandTwentyThreeTwentyFourTwentySixAndTwentyEightNotesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_AblFirstLienLoanDueAugustTwoThousandTwentyFiveMember" name="AblFirstLienLoanDueAugustTwoThousandTwentyFiveMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueAprilTwoThousandTwentySevenMember" name="FirstLienLoanDueAprilTwoThousandTwentySevenMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_NetUnrealizedGainsLossesOnInvestments" name="NetUnrealizedGainsLossesOnInvestments" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ck0001925309_ClassBUnitsMember" name="ClassBUnitsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienRevolvingLoanMember" name="FirstLienRevolvingLoanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_TruckLiteCoLlcMember" name="TruckLiteCoLlcMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_ReinvestmentOfDividends" name="ReinvestmentOfDividends" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ck0001925309_AvalaraIncMember" name="AvalaraIncMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_CommunicationsMember" name="CommunicationsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueFebruaryTwoThousandTwentySixMember" name="FirstLienLoanDueFebruaryTwoThousandTwentySixMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_IncentiveFeesOnNetCapitalGainsLosses" name="IncentiveFeesOnNetCapitalGainsLosses" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ck0001925309_RepurchaseOfConvertibleNotes" name="RepurchaseOfConvertibleNotes" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ck0001925309_RapidDataGmbhUnternehmensberatungMember" name="RapidDataGmbhUnternehmensberatungMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_SwapSettlement" name="SwapSettlement" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ck0001925309_AblFiloTermLoanDueMayTwoThousandTwentyFourMember" name="AblFiloTermLoanDueMayTwoThousandTwentyFourMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_DividendsDeclaredDuringThePeriod" name="DividendsDeclaredDuringThePeriod" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueDecemberTwoThousandTwentyOneMember" name="FirstLienLoanDueDecemberTwoThousandTwentyOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_AblFiloTermLoanDueDecemberTwoThousandTwentyFiveMember" name="AblFiloTermLoanDueDecemberTwoThousandTwentyFiveMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_AgreementTerminationPeriodWithoutPenalty" name="AgreementTerminationPeriodWithoutPenalty" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001925309_ClassAOneUnitsMember" name="ClassAOneUnitsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_PaymentsForSettlementsOfInterestRateSwapsExcludingUpfrontFees" name="PaymentsForSettlementsOfInterestRateSwapsExcludingUpfrontFees" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ck0001925309_S2024Q4DividendsMember" name="S2024Q4DividendsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_PercentageOfPreIncentiveFeeNetInvestmentIncomePayableAfterHurdleRateReachedAndCatchUpAchieved" name="PercentageOfPreIncentiveFeeNetInvestmentIncomePayableAfterHurdleRateReachedAndCatchUpAchieved" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001925309_FirstLienRevolvingLoanDueOctoberTwoThousandTwentyTwoMember" name="FirstLienRevolvingLoanDueOctoberTwoThousandTwentyTwoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_UndistributedNetInvestmentIncomeTaxBasis" name="UndistributedNetInvestmentIncomeTaxBasis" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ck0001925309_FirstLienRevolvingLoanMayTwoThousandTwentyFourMember" name="FirstLienRevolvingLoanMayTwoThousandTwentyFourMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FullsteamOperationsLlcMember" name="FullsteamOperationsLlcMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueSeptemberTwoThousandTwentySixMember" name="FirstLienLoanDueSeptemberTwoThousandTwentySixMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_PurchasesAndOriginationsOfInvestmentsNet" name="PurchasesAndOriginationsOfInvestmentsNet" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ck0001925309_AblFiloTermLoanOneDueAprilTwoThousandTwentyFourMember" name="AblFiloTermLoanOneDueAprilTwoThousandTwentyFourMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueAprilTwoThousandTwentyFourOneMember" name="FirstLienLoanDueAprilTwoThousandTwentyFourOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_InterestAndDividendIncomeRecognitionPolicyTextBlock" name="InterestAndDividendIncomeRecognitionPolicyTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001925309_ConvertibleNoteMember" name="ConvertibleNoteMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_ControlledAffiliatedInvestmentsMember" name="ControlledAffiliatedInvestmentsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_HippoXpaBidcoAbMember" name="HippoXpaBidcoAbMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_ChemicalsMember" name="ChemicalsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_PharmaceuticalsMember" name="PharmaceuticalsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_AssetCoveragePercentage" name="AssetCoveragePercentage" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="ck0001925309_OtherIncomeForTaxPurposesNotBook" name="OtherIncomeForTaxPurposesNotBook" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ck0001925309_UnRealizedInvestmentGainsLossesAbstract" name="UnRealizedInvestmentGainsLossesAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienRevolvingLoanOctoberTwoThousandTwentyFourMember" name="FirstLienRevolvingLoanOctoberTwoThousandTwentyFourMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_WranglerTopcoLlcMember" name="WranglerTopcoLlcMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_DelayedDrawRevolverEquityMember" name="DelayedDrawRevolverEquityMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueAugustTwoThousandTwentySixOneMember" name="FirstLienLoanDueAugustTwoThousandTwentySixOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_PercentageOfManagementFeeInExcessOfAnnualRateOnGrossAssets" name="PercentageOfManagementFeeInExcessOfAnnualRateOnGrossAssets" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueNovemberTwoThousandTwentySixTwoMember" name="FirstLienLoanDueNovemberTwoThousandTwentySixTwoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienLoanOneDueMarchTwoThousandTwentyFourMember" name="FirstLienLoanOneDueMarchTwoThousandTwentyFourMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_ProceedsFromInvestmentsNet" name="ProceedsFromInvestmentsNet" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ck0001925309_LaramieEnergyLLCMember" name="LaramieEnergyLLCMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienRevolvingLoanAprilTwoThousandTwentyFiveOneMember" name="FirstLienRevolvingLoanAprilTwoThousandTwentyFiveOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_TwoThousandThirtyNotesMember" name="TwoThousandThirtyNotesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_PercentageOfManagementFeeInExcessOfQuarterRateOnGrossAssets" name="PercentageOfManagementFeeInExcessOfQuarterRateOnGrossAssets" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueSeptemberTwoThousandTwentySixSevenMember" name="FirstLienLoanDueSeptemberTwoThousandTwentySixSevenMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_SecondLienLoanDueOctoberTwoThousandTwentyNineOneMember" name="SecondLienLoanDueOctoberTwoThousandTwentyNineOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_TwoThousandTwentyNineAndTwoThousandThirtyNotesMember" name="TwoThousandTwentyNineAndTwoThousandThirtyNotesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_GalileoParentincMember" name="GalileoParentincMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueJanuaryTwoThousandTwentyFourMember" name="FirstLienLoanDueJanuaryTwoThousandTwentyFourMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_ABLFILOTermLoanDueAprilTwoThousandTwentyFourMember" name="ABLFILOTermLoanDueAprilTwoThousandTwentyFourMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_O2023Q3DividendsMember" name="O2023Q3DividendsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienRevolvingLoanDueMayTwoThousandTwentyFourMember" name="FirstLienRevolvingLoanDueMayTwoThousandTwentyFourMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_PrincipalAmountOutstandingAndAccruedInterest" name="PrincipalAmountOutstandingAndAccruedInterest" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueAprilTwoThousandTwentySevenOneMember" name="FirstLienLoanDueAprilTwoThousandTwentySevenOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_ConvertibleNoteDueMayTwoThousandTwentyEightMember" name="ConvertibleNoteDueMayTwoThousandTwentyEightMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueJuneTwoThousandTwentySixOneMember" name="FirstLienLoanDueJuneTwoThousandTwentySixOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueJuneTwoThousandTwentySixMember" name="FirstLienLoanDueJuneTwoThousandTwentySixMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueOctoberTwoThousandTwentyFiveThreeMember" name="FirstLienLoanDueOctoberTwoThousandTwentyFiveThreeMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienLoanMember" name="FirstLienLoanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_ElementsFincoLimitedMember" name="ElementsFincoLimitedMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueSeptemberTwoThousandTwentyThreeTwoMember" name="FirstLienLoanDueSeptemberTwoThousandTwentyThreeTwoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_AdjustmentsAbstract" name="AdjustmentsAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueAprilTwoThousandTwentyFiveThreeMember" name="FirstLienLoanDueAprilTwoThousandTwentyFiveThreeMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_SpecifiedRelevantRateMember" name="SpecifiedRelevantRateMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_TwoThousandTwentyNineNotesMember" name="TwoThousandTwentyNineNotesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_SummaryOfTaxBasisComponentsOfDistributableEarningsTableTextBlock" name="SummaryOfTaxBasisComponentsOfDistributableEarningsTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueDecemberTwoThousandTwentyTwoMember" name="FirstLienLoanDueDecemberTwoThousandTwentyTwoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_NetInvestmentGainLoss" name="NetInvestmentGainLoss" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueDecemberTwoThousandTwentyTwoThreeMember" name="FirstLienLoanDueDecemberTwoThousandTwentyTwoThreeMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienRevolvingLoanDueAprilTwoThousandTwentyFourMember" name="FirstLienRevolvingLoanDueAprilTwoThousandTwentyFourMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueMayTwoThousandTwentyFourTwoMember" name="FirstLienLoanDueMayTwoThousandTwentyFourTwoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_ScheduleOfCommitmentsToFundInvestmentsInCurrentPortfolioCompaniesTableTextBlock" name="ScheduleOfCommitmentsToFundInvestmentsInCurrentPortfolioCompaniesTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001925309_O2023Q2DividendsMember" name="O2023Q2DividendsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueMayTwoThousandTwentyFourThreeMember" name="FirstLienLoanDueMayTwoThousandTwentyFourThreeMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_DividendsPayableDateOfSharesIssuedDayMonthAndYear" name="DividendsPayableDateOfSharesIssuedDayMonthAndYear" type="xbrli:dateItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueNovemberTwoThousandTwentyFiveMember" name="FirstLienLoanDueNovemberTwoThousandTwentyFiveMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_OffsettingAssetsAndLiabilitiesPolicyTextBlock" name="OffsettingAssetsAndLiabilitiesPolicyTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001925309_InvestmentsFairValueDisclosureNet" name="InvestmentsFairValueDisclosureNet" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ck0001925309_PdiTaHoldingsIncMember" name="PdiTaHoldingsIncMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FederalIncomeTaxRisksMember" name="FederalIncomeTaxRisksMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_RevolverEquityMember" name="RevolverEquityMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_StructuredProductDueAprilTwoThousandThirtyOneMember" name="StructuredProductDueAprilTwoThousandThirtyOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_DeferredOrganizationCosts" name="DeferredOrganizationCosts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ck0001925309_ABLFILOTermLoanDueMayTwoThousandTwentySixMember" name="ABLFILOTermLoanDueMayTwoThousandTwentySixMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueOctoberTwoThousandTwentyFiveTwoMember" name="FirstLienLoanDueOctoberTwoThousandTwentyFiveTwoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueAprilTwoThousandTwentyThreeOneMember" name="FirstLienLoanDueAprilTwoThousandTwentyThreeOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_PercentageOfOrdinaryIncomeQualifiedAsInterestRelatedDividendExemptFromDomesticWithholdingTaxApplicableToForeignShareholder" name="PercentageOfOrdinaryIncomeQualifiedAsInterestRelatedDividendExemptFromDomesticWithholdingTaxApplicableToForeignShareholder" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001925309_ConvertibleNoteDueSeptemberTwoThousandTwentyThreeMember" name="ConvertibleNoteDueSeptemberTwoThousandTwentyThreeMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_RetailAndConsumerProductsMember" name="RetailAndConsumerProductsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueDecemberTwoThousandTwentySevenThreeMember" name="FirstLienLoanDueDecemberTwoThousandTwentySevenThreeMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_InterestRateSwapFourteenMember" name="InterestRateSwapFourteenMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_ExciseAndOtherTaxesPaidDuringThePeriod" name="ExciseAndOtherTaxesPaidDuringThePeriod" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ck0001925309_ConvertibleNoteDueMayTwoThousandTwentyEightOneMember" name="ConvertibleNoteDueMayTwoThousandTwentyEightOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_RisksRelatedToEconomicConditionsMember" name="RisksRelatedToEconomicConditionsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueSeptemberTwoThousandTwentyThreeMember" name="FirstLienLoanDueSeptemberTwoThousandTwentyThreeMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienLoansDueAugustTwoThousandTwentyFiveOneMember" name="FirstLienLoansDueAugustTwoThousandTwentyFiveOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_GreenshootBidcoBVMember" name="GreenshootBidcoBVMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_OtherPayablesToAffiliate" name="OtherPayablesToAffiliate" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ck0001925309_O2024Q3DividendsMember" name="O2024Q3DividendsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_O2024Q4DividendsMember" name="O2024Q4DividendsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueAugustTwoThousandTwentyThreeMember" name="FirstLienLoanDueAugustTwoThousandTwentyThreeMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueOctoberTwoThousandTwentyFourFourMember" name="FirstLienLoanDueOctoberTwoThousandTwentyFourFourMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueMayTwoThousandTwentyFourOneMember" name="FirstLienLoanDueMayTwoThousandTwentyFourOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_NetChangeInUnrealizedGainsLossOnInvestmentsAndForeignCurrencyTranslation" name="NetChangeInUnrealizedGainsLossOnInvestmentsAndForeignCurrencyTranslation" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ck0001925309_ABLFirstLienLoanMember" name="ABLFirstLienLoanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_SterlingOvernightInterbankAverageRateMember" name="SterlingOvernightInterbankAverageRateMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_IncentiveFeesOnNetInvestmentIncome" name="IncentiveFeesOnNetInvestmentIncome" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ck0001925309_FirstLienTermLoanDueSeptemberTwoThousandTwentyFiveMember" name="FirstLienTermLoanDueSeptemberTwoThousandTwentyFiveMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_ForeignCurrencyTransactionGainLossRealized1" name="ForeignCurrencyTransactionGainLossRealized1" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ck0001925309_PercentageOfPreIncentiveFeeNetInvestmentIncomePayableQuarterly" name="PercentageOfPreIncentiveFeeNetInvestmentIncomePayableQuarterly" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001925309_FirstLienRevolvingLoanJuneTwoThousandTwentyTwoMember" name="FirstLienRevolvingLoanJuneTwoThousandTwentyTwoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_LineOfCreditFacilityExtendedDate" name="LineOfCreditFacilityExtendedDate" type="xbrli:dateItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001925309_FirstLienSecuredNoteDueJulyTwoThousandTwentyThreeMember" name="FirstLienSecuredNoteDueJulyTwoThousandTwentyThreeMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_CapitalGainsAccrueFollowingMarchThirtyFirstTwoThousandFourteenMember" name="CapitalGainsAccrueFollowingMarchThirtyFirstTwoThousandFourteenMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueJulyTwoThousandTwentyThreeMember" name="FirstLienLoanDueJulyTwoThousandTwentyThreeMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_WestMember" name="WestMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_OrganizationAndOfferingExpenses" name="OrganizationAndOfferingExpenses" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueDecemberTwoThousandTwentySevenMember" name="FirstLienLoanDueDecemberTwoThousandTwentySevenMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueDecemberTwoThousandTwentyFourMember" name="FirstLienLoanDueDecemberTwoThousandTwentyFourMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_HumanResourceSupportServicesMember" name="HumanResourceSupportServicesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_IncreaseDecreaseInInterestReceivablePaidInKind" name="IncreaseDecreaseInInterestReceivablePaidInKind" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ck0001925309_NetRealizedGainsLossesOnInvestmentsAndForeignCurrencyTranslation" name="NetRealizedGainsLossesOnInvestmentsAndForeignCurrencyTranslation" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ck0001925309_RepaymentOnInvestments" name="RepaymentOnInvestments" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ck0001925309_EventusBuyerLLCMember" name="EventusBuyerLLCMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_RealizedCapitalGainsAccruedPriorToMarchThirtyFirstTwoThousandFourteenMember" name="RealizedCapitalGainsAccruedPriorToMarchThirtyFirstTwoThousandFourteenMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_OtherTemporaryDifferences" name="OtherTemporaryDifferences" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ck0001925309_TaxCostOfInvestments" name="TaxCostOfInvestments" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ck0001925309_FirstLienRevolvingLoanAprilTwoThousandTwentyFiveMember" name="FirstLienRevolvingLoanAprilTwoThousandTwentyFiveMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FairValueOfSecuritiesAsPercentageOfNetAssetsAmount" name="FairValueOfSecuritiesAsPercentageOfNetAssetsAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ck0001925309_FirstLienLoansDueDecemberTwoThousandTwentyFiveMember" name="FirstLienLoansDueDecemberTwoThousandTwentyFiveMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_ApteanIncMember" name="ApteanIncMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_PurchaseCommitmentToFundInvestment" name="PurchaseCommitmentToFundInvestment" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ck0001925309_ManufacturingMember" name="ManufacturingMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_ProceedsFromSettlementsOfInterestRateSwapsExcludingUpfrontFees" name="ProceedsFromSettlementsOfInterestRateSwapsExcludingUpfrontFees" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ck0001925309_WithoutManagementFeeWaiverMember" name="WithoutManagementFeeWaiverMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_ScheduleOfComponentOfCarryingValueOfConvertibleNotesAndInterestRateTableTextBlock" name="ScheduleOfComponentOfCarryingValueOfConvertibleNotesAndInterestRateTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001925309_WithManagementFeeWaiverMember" name="WithManagementFeeWaiverMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_PercentageOfAllRemainingPreIncentiveFeeNetInvestmentIncomeQuarterly" name="PercentageOfAllRemainingPreIncentiveFeeNetInvestmentIncomeQuarterly" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueAprilTwoThousandTwentyFiveFourMember" name="FirstLienLoanDueAprilTwoThousandTwentyFiveFourMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_InvestmentCompanyNetCommonShareIssuancePerShare" name="InvestmentCompanyNetCommonShareIssuancePerShare" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueAprilTwoThousandTwentySixOneMember" name="FirstLienLoanDueAprilTwoThousandTwentySixOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_OrganizationalFees" name="OrganizationalFees" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ck0001925309_ConvertibleNoteDueDecemberTwoThousandTwentyFourMember" name="ConvertibleNoteDueDecemberTwoThousandTwentyFourMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_DerivativeNotionalAmountHeldDuringPeriod" name="DerivativeNotionalAmountHeldDuringPeriod" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueJulyTwoThousandTwentyTwoMember" name="FirstLienLoanDueJulyTwoThousandTwentyTwoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_JanuaryTwoThousandThirtyNotesMember" name="JanuaryTwoThousandThirtyNotesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_SkyBidcoSPAMember" name="SkyBidcoSPAMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_ManagementAndIncentiveFeesWaived" name="ManagementAndIncentiveFeesWaived" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ck0001925309_ScheduleOfComponentsOfInterestExpenseTableTextBlock" name="ScheduleOfComponentsOfInterestExpenseTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001925309_InterestRateSwapNineMember" name="InterestRateSwapNineMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_SubordinatedNoteDueSeptemberTwoThousandTwentySixMember" name="SubordinatedNoteDueSeptemberTwoThousandTwentySixMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_InterestRateSwaps" name="InterestRateSwaps" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ck0001925309_InsuranceMember" name="InsuranceMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueSeptemberTwoThousandTwentyEightTwoMember" name="FirstLienLoanDueSeptemberTwoThousandTwentyEightTwoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_OtherExpenseNotCurrentlyDeductible" name="OtherExpenseNotCurrentlyDeductible" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ck0001925309_PercentageOfPreIncentiveFeeNetInvestmentIncomeHurdleRateQuarterly" name="PercentageOfPreIncentiveFeeNetInvestmentIncomeHurdleRateQuarterly" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001925309_SecondLienDebtInvestmentsMember" name="SecondLienDebtInvestmentsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueDecemberTwoThousandTwentyFiveOneMember" name="FirstLienLoanDueDecemberTwoThousandTwentyFiveOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_PercentageOfAllRemainingPreIncentiveFeeNetInvestmentIncomeQuarterlySubsequentToExchangeListing" name="PercentageOfAllRemainingPreIncentiveFeeNetInvestmentIncomeQuarterlySubsequentToExchangeListing" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueMarchTwentyTwentyFourMember" name="FirstLienLoanDueMarchTwentyTwentyFourMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_TaxableIncome" name="TaxableIncome" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueNovemberTwoThousandTwentyNineMember" name="FirstLienLoanDueNovemberTwoThousandTwentyNineMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueJanuaryTwoThousandTwentyFiveMember" name="FirstLienLoanDueJanuaryTwoThousandTwentyFiveMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_PaidInKindInterestIncome" name="PaidInKindInterestIncome" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueMarchTwentyTwentySixMember" name="FirstLienLoanDueMarchTwentyTwentySixMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_PercentageOfWeightedCumulativeRealizedCapitalGainsLessRealizedCapitalLossesAndUnrealizedCapitalLossesThroughMarch312014HurdleRate" name="PercentageOfWeightedCumulativeRealizedCapitalGainsLessRealizedCapitalLossesAndUnrealizedCapitalLossesThroughMarch312014HurdleRate" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001925309_MezzanineDebtInvestmentsMember" name="MezzanineDebtInvestmentsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_AlaskaBidcoOyMember" name="AlaskaBidcoOyMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_SMATechnologiesHoldingsLLCMember" name="SMATechnologiesHoldingsLLCMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_DelayedDrawMember" name="DelayedDrawMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueAugustTwoThousandTwentyFiveMember" name="FirstLienLoanDueAugustTwoThousandTwentyFiveMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueAugustTwoThousandTwentyTwoOneMember" name="FirstLienLoanDueAugustTwoThousandTwentyTwoOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_ConvertibleNotesDueJuneTwoThousandTwentySevenMember" name="ConvertibleNotesDueJuneTwoThousandTwentySevenMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueNovemberTwoThousandTwentyEightMember" name="FirstLienLoanDueNovemberTwoThousandTwentyEightMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_O2024Q1DividendsMember" name="O2024Q1DividendsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_LeverageWaiverMember" name="LeverageWaiverMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienNoteOneDueJuneTwoThousandTwentyFourMember" name="FirstLienNoteOneDueJuneTwoThousandTwentyFourMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienRevolvingLoanJulyTwoThousandTwentyTwoMember" name="FirstLienRevolvingLoanJulyTwoThousandTwentyTwoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_CapitalGains" name="CapitalGains" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueOctoberTwoThousandTwentyFourOneMember" name="FirstLienLoanDueOctoberTwoThousandTwentyFourOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_BctoBluebillBuyerIncMember" name="BctoBluebillBuyerIncMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_LineOfCreditFacilityMaximumBorrowingCapacityUnderCertainCircumstances" name="LineOfCreditFacilityMaximumBorrowingCapacityUnderCertainCircumstances" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ck0001925309_PercentageOfInvestmentsAtFairValue" name="PercentageOfInvestmentsAtFairValue" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueJuneTwoThousandTwentySixTwoMember" name="FirstLienLoanDueJuneTwoThousandTwentySixTwoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueAugustTwoThousandTwentyTwoMember" name="FirstLienLoanDueAugustTwoThousandTwentyTwoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_ClassAUnitsMember" name="ClassAUnitsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_InvestmentDueDate" name="InvestmentDueDate" type="xbrli:gYearMonthItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001925309_InvestmentCompanyDividendDeclaredPerShare" name="InvestmentCompanyDividendDeclaredPerShare" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001925309_FutureRealizedCapitalGainsPriorToAprilFirstTwoThousandFourteenMember" name="FutureRealizedCapitalGainsPriorToAprilFirstTwoThousandFourteenMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_AblFiloTermLoanDueSeptemberTwoThousandTwentyTwoMember" name="AblFiloTermLoanDueSeptemberTwoThousandTwentyTwoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_StructuredProductDueJanuaryTwoThousandThirtyMember" name="StructuredProductDueJanuaryTwoThousandThirtyMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_ElysiumBidCoLimitedMember" name="ElysiumBidCoLimitedMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_KangarooBidcoASMember" name="KangarooBidcoASMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueMayTwoThousandTwentyEightOneMember" name="FirstLienLoanDueMayTwoThousandTwentyEightOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_MidwestMember" name="MidwestMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_LineOfCreditFacilityStatedMaturityDate" name="LineOfCreditFacilityStatedMaturityDate" type="xbrli:dateItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueAprilTwoThousandTwentySixMember" name="FirstLienLoanDueAprilTwoThousandTwentySixMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_InterestRateSwapFourMember" name="InterestRateSwapFourMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueSeptemberTwoThousandTwentyEightOneMember" name="FirstLienLoanDueSeptemberTwoThousandTwentyEightOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_VarinemGermanBidcoGmbhMember" name="VarinemGermanBidcoGmbhMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueAprilTwoThousandTwentyFiveMember" name="FirstLienLoanDueAprilTwoThousandTwentyFiveMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_PercentageOfManagementFeeCalculatedOnGrossAssets" name="PercentageOfManagementFeeCalculatedOnGrossAssets" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001925309_ErlingLuxBidcoSarlMember" name="ErlingLuxBidcoSarlMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_NortheastMember" name="NortheastMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_ScorpioBidcoMember" name="ScorpioBidcoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_PercentageOfExcessCatchUpProvisionForPreIncentiveFeeNetInvestmentIncome" name="PercentageOfExcessCatchUpProvisionForPreIncentiveFeeNetInvestmentIncome" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001925309_SkylarkUkDebtcoMember" name="SkylarkUkDebtcoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_NetChangeInUnrealizedGainsLossesOnInvestmentsAndForeignCurrencyTranslation" name="NetChangeInUnrealizedGainsLossesOnInvestmentsAndForeignCurrencyTranslation" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ck0001925309_InterestRateSwapEightMember" name="InterestRateSwapEightMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_OfficeProductsMember" name="OfficeProductsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_SummaryOfTaxCharacterOfShareholderDistributionsTableTextBlock" name="SummaryOfTaxCharacterOfShareholderDistributionsTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001925309_KryptonaBidCoUSLLCMember" name="KryptonaBidCoUSLLCMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienDebtInvestmentsMember" name="FirstLienDebtInvestmentsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_PercentageOfManagementFeesInExcessOfAverageAggregateDrawnCapital" name="PercentageOfManagementFeesInExcessOfAverageAggregateDrawnCapital" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueAprilTwoThousandTwentyFourMember" name="FirstLienLoanDueAprilTwoThousandTwentyFourMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_RevolverPartnershipInterestMember" name="RevolverPartnershipInterestMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueOctoberTwoThousandTwentyEightOneMember" name="FirstLienLoanDueOctoberTwoThousandTwentyEightOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_PercentageOfExcessPreIncentiveFeeNetInvestmentIncomeForImmediatePrecedingCalendarQuarter" name="PercentageOfExcessPreIncentiveFeeNetInvestmentIncomeForImmediatePrecedingCalendarQuarter" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueJulyTwoThousandTwentySevenOneMember" name="FirstLienLoanDueJulyTwoThousandTwentySevenOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_TrustCertificatesTwoMember" name="TrustCertificatesTwoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_SubscriptionFacilityMember" name="SubscriptionFacilityMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_ReimbursementOfTransactionRelatedExpensesPolicyTextBlock" name="ReimbursementOfTransactionRelatedExpensesPolicyTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001925309_OfferingFees" name="OfferingFees" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ck0001925309_PercentageOfOrganizationAndOfferingExpenses" name="PercentageOfOrganizationAndOfferingExpenses" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueDecemberTwoThousandTwentyFiveMember" name="FirstLienLoanDueDecemberTwoThousandTwentyFiveMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_InvestmentAdvisoryAgreementMember" name="InvestmentAdvisoryAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_IncentiveFeesOnNetInvestmentIncomePayableToAffiliate" name="IncentiveFeesOnNetInvestmentIncomePayableToAffiliate" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueJuneTwoThousandTwentyFiveMember" name="FirstLienLoanDueJuneTwoThousandTwentyFiveMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_EquityAndOtherInvestmentsMember" name="EquityAndOtherInvestmentsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueOctoberTwoThousandTwentyFiveMember" name="FirstLienLoanDueOctoberTwoThousandTwentyFiveMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueOctoberTwoThousandTwentyFourMember" name="FirstLienLoanDueOctoberTwoThousandTwentyFourMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_NondeductibleFederalExciseTaxPercentage" name="NondeductibleFederalExciseTaxPercentage" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001925309_BlackScholesModelMember" name="BlackScholesModelMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FairValueOfAnEffectiveHedge" name="FairValueOfAnEffectiveHedge" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ck0001925309_InterestRateSwapElevenMember" name="InterestRateSwapElevenMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_SummaryOfGeographicCompositionOfInvestmentsAtFairValueTableTextBlock" name="SummaryOfGeographicCompositionOfInvestmentsAtFairValueTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001925309_SummaryOfCommonSharesIssuedAndProceedsReceivedTableTextBlock" name="SummaryOfCommonSharesIssuedAndProceedsReceivedTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueFebruaryTwoThousandTwentyFourMember" name="FirstLienLoanDueFebruaryTwoThousandTwentyFourMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_SignificantAccountingPoliciesTable" name="SignificantAccountingPoliciesTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_BswiftLlcMember" name="BswiftLlcMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_InvestmentsAtFairValueTextBlock" name="InvestmentsAtFairValueTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueJuneTwoThousandTwentyTwoMember" name="FirstLienLoanDueJuneTwoThousandTwentyTwoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_PercentageOfPreIncentiveFeeNetInvestmentIncomeAnnualizedAfterCatchUpAchieved" name="PercentageOfPreIncentiveFeeNetInvestmentIncomeAnnualizedAfterCatchUpAchieved" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueMarchTwoThousandTwentyFourMember" name="FirstLienLoanDueMarchTwoThousandTwentyFourMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueDecemberTwoThousandTwentyFourOneMember" name="FirstLienLoanDueDecemberTwoThousandTwentyFourOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueMayTwoThousandTwentyFourMember" name="FirstLienLoanDueMayTwoThousandTwentyFourMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_DividendsTextBlock" name="DividendsTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001925309_IncentiveFeesAccruedRelatedToExpenseReversalCapitalGainsFees" name="IncentiveFeesAccruedRelatedToExpenseReversalCapitalGainsFees" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ck0001925309_MinimumPercentageOfInvestmentCompanyTaxableIncomeDistributeToStockholdersInEachTaxableYearToQualifyAsRIC" name="MinimumPercentageOfInvestmentCompanyTaxableIncomeDistributeToStockholdersInEachTaxableYearToQualifyAsRIC" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001925309_BenNevisMidcoLimitedMember" name="BenNevisMidcoLimitedMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_SapphireSoftwareBuyerIncMember" name="SapphireSoftwareBuyerIncMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueOctoberTwoThousandTwentyTwoMember" name="FirstLienLoanDueOctoberTwoThousandTwentyTwoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_AdjustedTermSimpleSecuredOvernightFinancingMember" name="AdjustedTermSimpleSecuredOvernightFinancingMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_InterestRateSwapTwelveMember" name="InterestRateSwapTwelveMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_AdviserMember" name="AdviserMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_SubscriptionAgreementsMember" name="SubscriptionAgreementsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_MeasurementInputTransactionValueMember" name="MeasurementInputTransactionValueMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_MarketingServicesMember" name="MarketingServicesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_NetExpense" name="NetExpense" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ck0001925309_AdjustedDailySimpleSecuredOvernightFinancingMember" name="AdjustedDailySimpleSecuredOvernightFinancingMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_CoupaHoldingsLLCMember" name="CoupaHoldingsLLCMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueAugustTwoThousandTwentyFiveTwoMember" name="FirstLienLoanDueAugustTwoThousandTwentyFiveTwoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_SportAllianceGmbhMember" name="SportAllianceGmbhMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienTermLoanDueDecemberTwoThousandTwentySixMember" name="FirstLienTermLoanDueDecemberTwoThousandTwentySixMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_IncreaseDecreaseInManagementFeesPayableToAffiliate" name="IncreaseDecreaseInManagementFeesPayableToAffiliate" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ck0001925309_O2024Q22DividendsMember" name="O2024Q22DividendsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_HirevueIncMember" name="HirevueIncMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueSeptemberTwoThousandTwentyFiveMember" name="FirstLienLoanDueSeptemberTwoThousandTwentyFiveMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_IncomeTaxesIncludingExciseTaxesPolicyTextBlock" name="IncomeTaxesIncludingExciseTaxesPolicyTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001925309_TaxReclassificationOfStockholdersEquity" name="TaxReclassificationOfStockholdersEquity" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ck0001925309_UndistributedNetRealizedGainsLossesTaxBasis" name="UndistributedNetRealizedGainsLossesTaxBasis" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ck0001925309_AlternativeBaseRateMember" name="AlternativeBaseRateMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_TotalReturnBasedOnNetAssetValue" name="TotalReturnBasedOnNetAssetValue" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueAprilTwoThousandTwentyFiveOneMember" name="FirstLienLoanDueAprilTwoThousandTwentyFiveOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FinancialServicesMember" name="FinancialServicesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_RisksRelatedToOurBusinessAndStructureMember" name="RisksRelatedToOurBusinessAndStructureMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_SummaryOfIndustryCompositionOfInvestmentsAtFairValueTableTextBlock" name="SummaryOfIndustryCompositionOfInvestmentsAtFairValueTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001925309_IncreaseDecreaseInIncentiveFeesOnNetCapitalGainsLossesAccruedToAffiliate" name="IncreaseDecreaseInIncentiveFeesOnNetCapitalGainsLossesAccruedToAffiliate" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ck0001925309_CirrusBidcoLtdMember" name="CirrusBidcoLtdMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_InterestRateSwapThreeMember" name="InterestRateSwapThreeMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_AblFiloTermLoanDueAugustTwoThousandTwentySevenMember" name="AblFiloTermLoanDueAugustTwoThousandTwentySevenMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_CapitalCommitmentsRemainingUndrawn" name="CapitalCommitmentsRemainingUndrawn" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ck0001925309_OilGasAndConsumableFuelsMember" name="OilGasAndConsumableFuelsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_InterestRateSwapThirteenMember" name="InterestRateSwapThirteenMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_PercentageOfNetProceedsOfSaleOfEquityInterests" name="PercentageOfNetProceedsOfSaleOfEquityInterests" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001925309_CrewlineBuyerIncMember" name="CrewlineBuyerIncMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueJuneTwoThousandTwentyThreeMember" name="FirstLienLoanDueJuneTwoThousandTwentyThreeMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_PercentageOfPreIncentiveFeeNetInvestmentIncomePayableQuarterlySubsequentToExchangeListing" name="PercentageOfPreIncentiveFeeNetInvestmentIncomePayableQuarterlySubsequentToExchangeListing" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001925309_IncreaseDecreaseInAdditionalPaidInCapital" name="IncreaseDecreaseInAdditionalPaidInCapital" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ck0001925309_AffiliatedMember" name="AffiliatedMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_CostModelMember" name="CostModelMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_NetAssetsDisclosureTextBlock" name="NetAssetsDisclosureTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001925309_RepaymentsOnInvestments" name="RepaymentsOnInvestments" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ck0001925309_O2023Q1DividendsMember" name="O2023Q1DividendsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_SignificantAccountingPoliciesLineItems" name="SignificantAccountingPoliciesLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_ArrowbuyerIncMember" name="ArrowbuyerIncMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueOctoberTwoThousandTwentyThreeMember" name="FirstLienLoanDueOctoberTwoThousandTwentyThreeMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_ManagementFeeWaiverHurdle" name="ManagementFeeWaiverHurdle" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001925309_PercentageOfCumulativeRealizedCapitalGainsLessAggregateCapitalGainIncentiveFee" name="PercentageOfCumulativeRealizedCapitalGainsLessAggregateCapitalGainIncentiveFee" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001925309_LynxBidcoMember" name="LynxBidcoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_TrustCertificatesOneMember" name="TrustCertificatesOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_EdgeBidcoBVMember" name="EdgeBidcoBVMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_ShiftmoveGmbhMember" name="ShiftmoveGmbhMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_QSRAcquisitionCoMember" name="QSRAcquisitionCoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_IncentiveFeesOnNetCapitalGainsAccruedToAffiliate" name="IncentiveFeesOnNetCapitalGainsAccruedToAffiliate" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ck0001925309_PercentageOfCapitalGainIncentiveFeePriorToExchangeListing" name="PercentageOfCapitalGainIncentiveFeePriorToExchangeListing" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueSeptemberTwoThousandTwentyTwoMember" name="FirstLienLoanDueSeptemberTwoThousandTwentyTwoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_NonControlledNonAffiliatedInvestmentsMember" name="NonControlledNonAffiliatedInvestmentsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_SummaryOfSharesNewlyIssuedToShareholdersWhoHaveNotOptedOutOfDividendReinvestmentPlanTableTextBlock" name="SummaryOfSharesNewlyIssuedToShareholdersWhoHaveNotOptedOutOfDividendReinvestmentPlanTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001925309_AssetValuationWaterfallMember" name="AssetValuationWaterfallMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienRevolvingLoanAprilTwoThousandTwentyFiveTwoMember" name="FirstLienRevolvingLoanAprilTwoThousandTwentyFiveTwoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_AVSCHoldingCorpMember" name="AVSCHoldingCorpMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_MeritSoftwareFinanceHoldingsLlcMember" name="MeritSoftwareFinanceHoldingsLlcMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_OrganizationAndOfferingExpensesPolicyTextBlock" name="OrganizationAndOfferingExpensesPolicyTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001925309_ManagementFeesGrossOfWaivers" name="ManagementFeesGrossOfWaivers" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ck0001925309_NetChangeInRealizedGainsLossesOnInvestmentsAndForeignCurrencyTranslation" name="NetChangeInRealizedGainsLossesOnInvestmentsAndForeignCurrencyTranslation" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ck0001925309_HornetsecurityHoldingGmbhMember" name="HornetsecurityHoldingGmbhMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_CurrentMarketPricePerSharePercentage" name="CurrentMarketPricePerSharePercentage" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001925309_SecondLienLoanDueOctoberTwoThousandTwentyNineMember" name="SecondLienLoanDueOctoberTwoThousandTwentyNineMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueSeptemberTwoThousandTwentySixFourMember" name="FirstLienLoanDueSeptemberTwoThousandTwentySixFourMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_InterestRateSwapTenMember" name="InterestRateSwapTenMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_DeferredTaxLiabilityPertainingToUnrealizedGainsRelatedToInvestments" name="DeferredTaxLiabilityPertainingToUnrealizedGainsRelatedToInvestments" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ck0001925309_InterestRateSwapSevenMember" name="InterestRateSwapSevenMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_SlBuyerCorpMember" name="SlBuyerCorpMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienLoanParDueSeptemberTwoThousandTwentyOneMember" name="FirstLienLoanParDueSeptemberTwoThousandTwentyOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_SecondLienLoanDueJuneTwoThousandTwentyFiveMember" name="SecondLienLoanDueJuneTwoThousandTwentyFiveMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueJulyTwoThousandTwentyFiveOneMember" name="FirstLienLoanDueJulyTwoThousandTwentyFiveOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_SummaryOfReconciliationIncreaseInNetAssetsTableTextBlock" name="SummaryOfReconciliationIncreaseInNetAssetsTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001925309_ArtisanBidcoIncMember" name="ArtisanBidcoIncMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueJanuaryTwoThousandTwentyOneMember" name="FirstLienLoanDueJanuaryTwoThousandTwentyOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueMayTwoThousandTwentyEightMember" name="FirstLienLoanDueMayTwoThousandTwentyEightMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_OrdinaryIncome" name="OrdinaryIncome" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ck0001925309_FirstLienLoanOneDueDecemberTwoThousandTwentyFiveMember" name="FirstLienLoanOneDueDecemberTwoThousandTwentyFiveMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_ElectronicsMember" name="ElectronicsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_RisksRelatedToOurSecuritiesMember" name="RisksRelatedToOurSecuritiesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienRevolvingLoanParDueSeptemberTwoThousandTwentyOneMember" name="FirstLienRevolvingLoanParDueSeptemberTwoThousandTwentyOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_ABLFILOTermLoanDueMayTwoThousandTwentyFiveMember" name="ABLFILOTermLoanDueMayTwoThousandTwentyFiveMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_TwoThousandTwentyNineAndJanuaryTwoThousandThirtyNotesMember" name="TwoThousandTwentyNineAndJanuaryTwoThousandThirtyNotesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_DelayedDrawRevolverMember" name="DelayedDrawRevolverMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueDecemberTwoThousandTwentySixOneMember" name="FirstLienLoanDueDecemberTwoThousandTwentySixOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_NetExpenseForFederalExciseTaxAndOtherTaxes" name="NetExpenseForFederalExciseTaxAndOtherTaxes" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ck0001925309_PercentageOfCapitalGainsFromApril12024HurdleRate" name="PercentageOfCapitalGainsFromApril12024HurdleRate" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001925309_RaptorUsBuyerIiCorpMember" name="RaptorUsBuyerIiCorpMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueAprilTwoThousandTwentyThreeMember" name="FirstLienLoanDueAprilTwoThousandTwentyThreeMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_ManagementFeesWaived" name="ManagementFeesWaived" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueSeptemberTwoThousandTwentySixOneMember" name="FirstLienLoanDueSeptemberTwoThousandTwentySixOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_IncentiveFeesAccruedRelatedToCumulativeUnrealizedCapitalGains" name="IncentiveFeesAccruedRelatedToCumulativeUnrealizedCapitalGains" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ck0001925309_PercentageOfMinimumQualifyingAssetsToPurchaseNonQualifyingAssets" name="PercentageOfMinimumQualifyingAssetsToPurchaseNonQualifyingAssets" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueDecemberTwoThousandTwentyThreeOneMember" name="FirstLienLoanDueDecemberTwoThousandTwentyThreeOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueDecemberTwoThousandTwentyThreeMember" name="FirstLienLoanDueDecemberTwoThousandTwentyThreeMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_DividendsPolicyTextBlock" name="DividendsPolicyTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001925309_JulyTwoThousandThirtyNotesMember" name="JulyTwoThousandThirtyNotesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_NonControlledAffiliatedInvestmentsMember" name="NonControlledAffiliatedInvestmentsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_UsaDebuskLlcMember" name="UsaDebuskLlcMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueOctoberTwoThousandTwentyFiveOneMember" name="FirstLienLoanDueOctoberTwoThousandTwentyFiveOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueJulyTwoThousandTwentySevenMember" name="FirstLienLoanDueJulyTwoThousandTwentySevenMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_PercentageOfIncentiveFeeRate" name="PercentageOfIncentiveFeeRate" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueDecemberTwoThousandTwentySixFourMember" name="FirstLienLoanDueDecemberTwoThousandTwentySixFourMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueJuneTwoThousandTwentySixThreeMember" name="FirstLienLoanDueJuneTwoThousandTwentySixThreeMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueMayTwoThousandTwentySevenMember" name="FirstLienLoanDueMayTwoThousandTwentySevenMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_InterestRateSwapTwoMember" name="InterestRateSwapTwoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueJulyTwoThousandTwentyFourMember" name="FirstLienLoanDueJulyTwoThousandTwentyFourMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueDecemberTwoThousandTwentySixMember" name="FirstLienLoanDueDecemberTwoThousandTwentySixMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueOctoberTwoThousandTwentySixTwoMember" name="FirstLienLoanDueOctoberTwoThousandTwentySixTwoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_EquityOfferingExpensesPolicyTextBlock" name="EquityOfferingExpensesPolicyTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001925309_GeneralRiskFactorsMember" name="GeneralRiskFactorsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_RevolverMember" name="RevolverMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FairValueOfSecuritiesAsPercentageOfNetAssetsInPercentage" name="FairValueOfSecuritiesAsPercentageOfNetAssetsInPercentage" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueOctoberTwoThousandTwentySixMember" name="FirstLienLoanDueOctoberTwoThousandTwentySixMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_InternetServicesMember" name="InternetServicesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueNovemberTwoThousandTwentySixMember" name="FirstLienLoanDueNovemberTwoThousandTwentySixMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueMayTwoThousandTwentySixMember" name="FirstLienLoanDueMayTwoThousandTwentySixMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_SubordinatedNoteMember" name="SubordinatedNoteMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_BabylonFincoLimitedMember" name="BabylonFincoLimitedMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_CommercehubIncMember" name="CommercehubIncMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_IncreaseDecreaseInIncentiveFeesOnNetInvestmentIncomePayableToAffiliate" name="IncreaseDecreaseInIncentiveFeesOnNetInvestmentIncomePayableToAffiliate" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueOctoberTwoThousandTwentyNineMember" name="FirstLienLoanDueOctoberTwoThousandTwentyNineMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_OptionalExtensionPeriodOfMaturityDateOfLineOfCreditFacility" name="OptionalExtensionPeriodOfMaturityDateOfLineOfCreditFacility" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001925309_FirstLienRevolvingLoanAprilTwoThousandTwentyFiveThreeMember" name="FirstLienRevolvingLoanAprilTwoThousandTwentyFiveThreeMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_PingIdentityHoldingCorporationMember" name="PingIdentityHoldingCorporationMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_PercentageOfExcessPreIncentiveFeeNetInvestmentIncomePayableAfterHurdleRateReachedAndCatchUpAchieved" name="PercentageOfExcessPreIncentiveFeeNetInvestmentIncomePayableAfterHurdleRateReachedAndCatchUpAchieved" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001925309_OtherBookTaxDifference" name="OtherBookTaxDifference" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ck0001925309_InterestRateSwapOneMember" name="InterestRateSwapOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_PercentageOfAllPreIncentiveFeeNetInvestmentIncomeAfterCatchUpAchieved" name="PercentageOfAllPreIncentiveFeeNetInvestmentIncomeAfterCatchUpAchieved" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001925309_SeverinAcquisitionLLCMember" name="SeverinAcquisitionLLCMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetNetAmortizationOfDiscountOnInvestment" name="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetNetAmortizationOfDiscountOnInvestment" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ck0001925309_O2024Q21DividendsMember" name="O2024Q21DividendsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_TwoThousandTwentySixNotesMember" name="TwoThousandTwentySixNotesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueNovemberTwoThousandTwentySevenMember" name="FirstLienLoanDueNovemberTwoThousandTwentySevenMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_BanyanSoftwareHoldingLlcMember" name="BanyanSoftwareHoldingLlcMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueMayTwoThousandTwentySevenOneMember" name="FirstLienLoanDueMayTwoThousandTwentySevenOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_InterestRateSwapSixMember" name="InterestRateSwapSixMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_TransportationMember" name="TransportationMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_TwoThousandTwentyFourNotesMember" name="TwoThousandTwentyFourNotesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_EstimatedGrossUnrealizedGainsOnTaxCostInvestment" name="EstimatedGrossUnrealizedGainsOnTaxCostInvestment" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ck0001925309_OrganizationPolicyTextBlock" name="OrganizationPolicyTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001925309_O2024Q4Dividends1Member" name="O2024Q4Dividends1Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_OtherIncomePolicyTextBlock" name="OtherIncomePolicyTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001925309_DiscoParentIncMember" name="DiscoParentIncMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueOctoberTwoThousandTwentyFourThreeMember" name="FirstLienLoanDueOctoberTwoThousandTwentyFourThreeMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_AblDipTermLoanDueAprilTwoThousandTwentyOneMember" name="AblDipTermLoanDueAprilTwoThousandTwentyOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_IssuanceOfLettersOfCreditUpToAnAggregateAmount" name="IssuanceOfLettersOfCreditUpToAnAggregateAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ck0001925309_RealizedCapitalGainsAccruedBeginningAprilFirstTwoThousandFourteenMember" name="RealizedCapitalGainsAccruedBeginningAprilFirstTwoThousandFourteenMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_AzuriteIntermediateHoldingsIncMember" name="AzuriteIntermediateHoldingsIncMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_PercentageOfNonQualifyingAssets" name="PercentageOfNonQualifyingAssets" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueAugustTwoThousandTwentySixMember" name="FirstLienLoanDueAugustTwoThousandTwentySixMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueDecemberTwoThousandTwentyFiveTwoMember" name="FirstLienLoanDueDecemberTwoThousandTwentyFiveTwoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001925309_FirstLienLoanDueOctoberTwoThousandTwentyEightMember" name="FirstLienLoanDueOctoberTwoThousandTwentyEightMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
</xsd:schema>
