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<!-- DFIN New ActiveDisclosure (SM) XBRL Linkbase Document - http://www.dfinsolutions.com/ -->
<!-- Creation Date :2022-11-10T16:05:16.6477+00:00 -->
<!-- Copyright (c) 2022 Donnelly Financial Solutions, Inc. All Rights Reserved. -->
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    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StockRepurchaseProgramAuthorizedAmount1" xlink:label="us-gaap_StockRepurchaseProgramAuthorizedAmount1"/>
    <link:loc xlink:type="locator" xlink:href="ck0001925309-20220930.xsd#ck0001925309_ABLFILOTermLoanMember" xlink:label="ck0001925309_ABLFILOTermLoanMember"/>
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_UnrealizedGainLossOnInvestments" xlink:label="us-gaap_UnrealizedGainLossOnInvestments"/>
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DerivativeInstrumentRiskAxis" xlink:label="us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:loc xlink:type="locator" xlink:href="ck0001925309-20220930.xsd#ck0001925309_StructuredProductDueJulyTwoThousandThirtyFourMember" xlink:label="ck0001925309_StructuredProductDueJulyTwoThousandThirtyFourMember"/>
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/country/2022/country-2022.xsd#country_GB" xlink:label="country_GB"/>
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentLineItems" xlink:label="us-gaap_DebtInstrumentLineItems"/>
    <link:loc xlink:type="locator" xlink:href="ck0001925309-20220930.xsd#ck0001925309_Astra2LHoldingsIILLCMember" xlink:label="ck0001925309_Astra2LHoldingsIILLCMember"/>
    <link:loc xlink:type="locator" xlink:href="ck0001925309-20220930.xsd#ck0001925309_MitnickTaAggregatorLpMember" xlink:label="ck0001925309_MitnickTaAggregatorLpMember"/>
    <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_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="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="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/terseLabel">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/documentation">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_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="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 Level1 [Member]</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="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_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="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_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="ck0001925309_IbisIntermediateCoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Ibis Intermediate Co.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IbisIntermediateCoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Ibis Intermediate Co [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IbisIntermediateCoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Ibis Intermediate Co.</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="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>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtConversionOriginalDebtAmount1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Value of debt converted</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtConversionOriginalDebtAmount1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Conversion, Original Debt, Amount</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/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_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/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_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_ConvertibleNotesPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Convertible Notes Payable, Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ConvertibleNotesPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Convertible Notes Payable</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ConvertibleNotesPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Aggregate principal amount of notes surrendered for conversion</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_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_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="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="us-gaap_InvestmentOwnedAtCost_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">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 At 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">Investment at amortized cost</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ProceedsFromSettlementsOfInterestRateSwapsRelatedToConvertibleNotes_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Proceeds from settlements of interest rate swaps related to convertible notes</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ProceedsFromSettlementsOfInterestRateSwapsRelatedToConvertibleNotes_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Proceeds from Settlements of Interest Rate Swaps Related to Convertible Notes</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ProceedsFromSettlementsOfInterestRateSwapsRelatedToConvertibleNotes_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Proceeds from Settlements of Interest Rate Swaps Related to Convertible Notes</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_CopperBidcoLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Copper Bidco, LLC.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_CopperBidcoLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Copper Bidco L L C [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_CopperBidcoLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Copper Bidco, LLC</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">Debt instrument interest rate subject to credit spread adjustment</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="ck0001925309_MerativeLPMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Merative L.P.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_MerativeLPMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Merative L.P. [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_MerativeLPMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Merative L.P.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_BearOpCoLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Bear OpCo, LLC.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_BearOpCoLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Bear Op Co L L C [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_BearOpCoLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Bear OpCo, LLC</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_CrunchtimeInformationSystemsIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">CrunchTime Information Systems, Inc.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_CrunchtimeInformationSystemsIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">CrunchTime Information Systems, Inc [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_CrunchtimeInformationSystemsIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">CrunchTime Information Systems, Inc.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueSeptemberTwoThousandTwentyThreeOneMember_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_FirstLienLoanDueSeptemberTwoThousandTwentyThreeOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First-lien Loan Due September Two Thousand Twenty Three one.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueSeptemberTwoThousandTwentyThreeOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due September Two Thousand Twenty Three One [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentQuarterlyReport_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Document Quarterly Report</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">Debt Instrument [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_EarningsPerSharePolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Earnings (Loss) Per Share</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 [Text Block]</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_LithiumTechnologiesLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Lithium Technologies, LLC.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_LithiumTechnologiesLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lithium Technologies L L C [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_LithiumTechnologiesLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Lithium Technologies, LLC</link:label>
    <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="ck0001925309_OptionalExtensionPeriodOfMaturityDateOfLineOfCreditFacility_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Optional Extension Period of Maturity Date of Line of Credit Facility</link:label>
    <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>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LondonInterbankOfferedRateLIBORMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">LIBOR</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LondonInterbankOfferedRateLIBORMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">London Interbank Offered Rate L I B O R [Member]</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_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>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_OriginalIssueDiscountNetOfAccretion_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Original Issue Discount, Net of Accretion</link:label>
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    <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_DyeDurhamLtdMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Dye &amp; Durham, Ltd.</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_DyeDurhamLtdMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Dye Durham Ltd [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_NetRealizedGainsLossesOnInvestmentsAndForeignCurrencyTranslation_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net realized losses on investments and foreign currency transactions</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_NetRealizedGainsLossesOnInvestmentsAndForeignCurrencyTranslation_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Net Realized Gains Losses on Investments and Foreign Currency Translation</link:label>
    <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="ck0001925309_MinimumPercentageOfInvestmentCompanyTaxableIncomeDistributeToShareholdersInEachTaxableYearToQualifyAsRic_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Minimum percentage of investment company taxable income distribute to shareholders in each taxable year to qualify as RIC</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_MinimumPercentageOfInvestmentCompanyTaxableIncomeDistributeToShareholdersInEachTaxableYearToQualifyAsRic_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Minimum Percentage Of Investment Company Taxable Income Distribute To Shareholders In Each Taxable Year To Qualify As RIC</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_MinimumPercentageOfInvestmentCompanyTaxableIncomeDistributeToShareholdersInEachTaxableYearToQualifyAsRic_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Minimum percentage of investment company taxable income distribute to shareholders in each taxable year to qualify as RIC.</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_FirstLienLoanDueDecemberTwoThousandTwentySevenTwoMember_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_FirstLienLoanDueDecemberTwoThousandTwentySevenTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First-lien Loan Due December Two Thousand Twenty Seven Two.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueDecemberTwoThousandTwentySevenTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due December Two Thousand Twenty Seven Two [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfPreIncentiveFeeNetInvestmentIncomePayableAfterHurdleRateReachedAndCatchUpAchieved_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">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/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>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AbilityToRaiseAdditionalCapitalDueToRegulationGovernanceOnBdcMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Ability to Raise Additional Capital Due to Regulation Governance On BDC [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AbilityToRaiseAdditionalCapitalDueToRegulationGovernanceOnBdcMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Ability to Raise Additional Capital Due to Regulation Governance On BDC [Member]</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 [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="ck0001925309_StructuredProductDueJulyTwoThousandThirtyOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Structured Product Due July Two Thousand Thirty One [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_StructuredProductDueJulyTwoThousandThirtyOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Structured Product due 7/2031</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_StructuredProductDueJulyTwoThousandThirtyOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Structured product due July Two Thousand Thirty One.</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 due 4/2027</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_OxfordSquareCapitalCorpMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Oxford Square Capital Corp.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_OxfordSquareCapitalCorpMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Oxford Square Capital Corp [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_OxfordSquareCapitalCorpMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Oxford Square Capital Corp</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_BaseDividendMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Base dividend.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_BaseDividendMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Base Dividend [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_BaseDividendMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Base</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 Stockholders 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="us-gaap_InvestmentCompanyExpenseRatioBeforeIncentiveAllocation_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Ratio of net expenses to average net assets</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentCompanyExpenseRatioBeforeIncentiveAllocation_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment Company Expense Ratio Before Incentive Allocation</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentCompanyExpenseRatioBeforeIncentiveAllocation_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="ck0001925309_DesignerBrandsIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Designer Brands, Inc.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_DesignerBrandsIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Designer Brands Inc [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_DesignerBrandsIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Designer Brands Inc</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueSeptemberTwoThousandTwentySixThreeMember_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_FirstLienLoanDueSeptemberTwoThousandTwentySixThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First Lien Loan Due September Two Thousand Twenty Six Three.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueSeptemberTwoThousandTwentySixThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due September Two Thousand Twenty Six Three [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ForeScoutTechnologiesIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">ForeScout Technologies, Inc.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ForeScoutTechnologiesIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fore Scout Technologies Inc [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ForeScoutTechnologiesIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">ForeScout Technologies Inc.</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 [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_FirstLienNoteDueJuneTwoThousandTwentyFourMember_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_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_UnRealizedInvestmentGainsLossesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net change in unrealized gains:</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="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="ck0001925309_PageUpPeopleLtdMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">PageUp People, Ltd.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PageUpPeopleLtdMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Page Up People Ltd [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PageUpPeopleLtdMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">PageUp People, Ltd.</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_LucidworksIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Lucidworks, Inc.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_LucidworksIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lucidworks Inc [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_LucidworksIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Lucidworks, Inc.</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="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="ck0001925309_StructuredProductDueJulyTwoThousandThirtyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Structured product due July Two Thousand Thirty.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_StructuredProductDueJulyTwoThousandThirtyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Structured Product Due July Two Thousand Thirty [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_StructuredProductDueJulyTwoThousandThirtyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Structured Product due 7/2030</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SpecialDividendMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Special dividend.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SpecialDividendMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Special Dividend [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SpecialDividendMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Special</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 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="ck0001925309_BorrowMoneyWhichMagnifiesPotentialForGainOrLossAndIncreasesRiskOfInvestingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Borrow money which magnifies potential for gain or loss and increases risk of investing.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_BorrowMoneyWhichMagnifiesPotentialForGainOrLossAndIncreasesRiskOfInvestingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Borrow Money Which Magnifies Potential for Gain or Loss and Increases Risk of Investing [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AcousticLPMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Acoustic, L.P.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AcousticLPMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Acoustic L P [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AcousticLPMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Acoustic, L.P.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SaleOfStockNameOfTransactionDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Sale Of Stock Name Of Transaction [Domain]</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AccretionOfOriginalIssueDiscount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accretion Of Original Issue Discount</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AccretionOfOriginalIssueDiscount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accretion of Original Issue Discount</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>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Expense</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestExpense_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_InvestmentCompanyRealizedAndUnrealizedGainLossOnInvestmentAndForeignCurrency_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total Net Unrealized and Realized Gains</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">Investment Company Realized And Unrealized Gain Loss On Investment And Foreign Currency</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="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_RevolvingCreditFacilityMaturityOnJanuary312025Member_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Revolving Credit Facility Maturity on January 31, 2025 [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_RevolvingCreditFacilityMaturityOnJanuary312025Member_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Revolving Credit Facility Maturity on January 31, 2025</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_RevolvingCreditFacilityMaturityOnJanuary312025Member_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Revolving credit facility maturity on January 31, 2025.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TreasuryStockShares_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Treasury Stock, Shares, Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TreasuryStockShares_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Treasury Stock Shares</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TreasuryStockShares_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Treasury stock, shares</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_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/documentation">Schedule of components of interest expense.</link:label>
    <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>
    <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="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="ck0001925309_FirstLienLoanDueFebruaryTwoThousandTwentySevenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Loan due 2/2027</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueFebruaryTwoThousandTwentySevenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First-lien Loan Due February Two Thousand Twenty Seven.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueFebruaryTwoThousandTwentySevenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due February Two Thousand Twenty Seven [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCreditFacilityInterestRateAtPeriodEnd_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Line Of Credit Facility Interest Rate At Period End</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCreditFacilityInterestRateAtPeriodEnd_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Line of credit facility, base rate percentage</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_NetChangeInRealizedGainsLossesOnInvestmentsAndForeignCurrencyTranslation_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total net realized 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/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_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/terseLabel">Net realized gains on investments and foreign currency transactions</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PayScaleHoldingsIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">PayScale Holdings, Inc.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PayScaleHoldingsIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Pay Scale Holdings Inc [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PayScaleHoldingsIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">PayScale Holdings, Inc.</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 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="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_IncreaseDecreaseInIncentiveFeesOnNetCapitalGainsAccruedToAffiliate_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Increase decrease in incentive fees on net capital gains accrued to affiliate.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IncreaseDecreaseInIncentiveFeesOnNetCapitalGainsAccruedToAffiliate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Increase Decrease In Incentive Fees On Net Capital Gains Accrued To Affiliate</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IncreaseDecreaseInIncentiveFeesOnNetCapitalGainsAccruedToAffiliate_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_PercentageOfHurdleRate_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Percentage of hurdle rate.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfHurdleRate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Percentage Of Hurdle Rate</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfHurdleRate_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="us-gaap_InvestmentTypeCategorizationMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment Type Categorization [Member]</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_RMCFIVCIVXXXVLPMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">RMCF IV CIV XXXV, LP.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_RMCFIVCIVXXXVLPMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">R M C F I V C I V X X X V L P [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_RMCFIVCIVXXXVLPMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">RMCF IV CIV XXXV, LP.</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="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted average shares of 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">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/label">Weighted Average Number Of Shares Outstanding Basic</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="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_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="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_VoyaCloLtdSeries20183AMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Voya CLO Ltd, Series 2018-3A.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_VoyaCloLtdSeries20183AMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Voya CLO Ltd, Series 2018-3A</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="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="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="us-gaap_IncreaseDecreaseInDueFromAffiliatesCurrent_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Payable to affiliate</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/label">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="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="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_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/documentation">Line of credit facility maximum borrowing capacity under certain circumstances.</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="ck0001925309_AbilityToEnterIntoTransactionsWithAffiliatesIsRestrictedMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Ability to enter into transactions with affiliates is restricted.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AbilityToEnterIntoTransactionsWithAffiliatesIsRestrictedMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Ability to Enter into Transactions with Affiliates is Restricted [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_CarisLifeSciencesIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Caris Life Sciences, Inc.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_CarisLifeSciencesIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Caris Life Sciences, Inc.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_CarisLifeSciencesIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Caris Life Sciences Inc [Member]</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>
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    <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>
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    <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>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DividendsPayableDateDeclaredDayMonthAndYear_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Dividends date declared</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">Range [Axis]</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetNetAmortizationOfDiscountOnSecurities_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 Securities</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetNetAmortizationOfDiscountOnSecurities_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_InformationClearinghouseLLCAndMSMarketServiceLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Information Clearing house LLC and MS Market Service LLC</link:label>
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    <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_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_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="us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Related Party Transactions By Related Party [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="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_DerivativeContractTypeDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative Contract Type [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="us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Stock issued upon conversion of convertible notes, shares</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stock Issued During Period, Shares, Conversion of Convertible Securities</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 due 12/2025</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_StructuredProductDueJulyTwoThousandThirtySixMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Structured Product Due July Two Thousand Thirty Six [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_StructuredProductDueJulyTwoThousandThirtySixMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Structured Product due 7/2036</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_StructuredProductDueJulyTwoThousandThirtySixMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Structured product due July Two Thousand Thirty Six.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentCompanyNetAssetsFromOperationsIncreaseDecrease_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Decrease in Net Assets Resulting from Operations</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentCompanyNetAssetsFromOperationsIncreaseDecrease_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment Company Net Assets From Operations Increase Decrease</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_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_EarningsPerShareDiluted_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Loss 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="us-gaap_InvestmentCompanyGainLossOnInvestmentPerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net realized and unrealized gain</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="ck0001925309_AlphaMidcoIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Alpha Midco, Inc.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AlphaMidcoIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Alpha Midco Inc [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AlphaMidcoIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Alpha Midco Inc.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IntelePeerHoldingsIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">IntelePeer Holdings, Inc.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IntelePeerHoldingsIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Intele Peer Holdings Inc [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IntelePeerHoldingsIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">IntelePeer Holdings, Inc.</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="ck0001925309_CarlyleGlobalMarketStrategiesCLOLtdSeriesTwoThousandSeventeenFourAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Carlyle global market strategies CLO Ltd series two thousand seventeen four A.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_CarlyleGlobalMarketStrategiesCLOLtdSeriesTwoThousandSeventeenFourAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Carlyle Global Market Strategies C L O Ltd Series Two Thousand Seventeen Four A [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_CarlyleGlobalMarketStrategiesCLOLtdSeriesTwoThousandSeventeenFourAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Carlyle Global Market Strategies CLO Ltd, Series 2017-4A</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_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/documentation">Schedule of commitments to fund investments in current portfolio companies.</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/2009/role/negatedLabel">Dividends declared from net investment income</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="srt_PartnershipInterestMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Partnership Interest [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_PartnershipInterestMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Partnership Interest</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 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="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="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="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="ck0001925309_USRParentIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">USR Parent, Inc.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_USRParentIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">U S R Parent Inc [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_USRParentIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">USR Parent, Inc.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_MitnickCorporatePurchaserIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Mitnick corporate purchaser, Inc.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_MitnickCorporatePurchaserIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Mitnick Corporate Purchaser, Inc [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_MitnickCorporatePurchaserIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Mitnick Corporate Purchaser, Inc.</link:label>
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    <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="us-gaap_UnrealizedGainLossOnDerivatives_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">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/terseLabel">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/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/2009/role/negatedLabel">Net change in unrealized losses on interest rate swaps</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_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="us-gaap_StockRepurchaseProgramPeriodInForce1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Stock repurchase program period</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockRepurchaseProgramPeriodInForce1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stock Repurchase Program, Period in Force</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SprinklrIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Sprinklr, Inc.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SprinklrIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Sprinklr Inc [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SprinklrIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Sprinklr, Inc.</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="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="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="ck0001925309_BlueSnapIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">BlueSnap, Inc.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_BlueSnapIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Blue Snap Inc [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_BlueSnapIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">BlueSnap, Inc.</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_ReliaQuestLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">ReliaQuest, LLC.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ReliaQuestLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Relia Quest L L C [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ReliaQuestLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Relia Quest L L C</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 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/terseLabel">ABL FILO Term Loan due 8/2027</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/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="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_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="ck0001925309_TangoManagementConsultingLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Tango Management Consulting, LLC.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_TangoManagementConsultingLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Tango Management Consulting L L C [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_TangoManagementConsultingLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Tango Management Consulting, LLC</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 4/2031</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/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="us-gaap_NetCashProvidedByUsedInFinancingActivities_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net Cash Provided by 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_FirstLienLoanDueMarchTwoThousandTwentySixMember_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_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="us-gaap_RelatedPartyTransactionSellingGeneralAndAdministrativeExpensesFromTransactionsWithRelatedParty_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Related Party Transaction Selling General And Administrative Expenses From Transactions With Related Party</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RelatedPartyTransactionSellingGeneralAndAdministrativeExpensesFromTransactionsWithRelatedParty_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_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_InvestmentOwnedAtFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment Owned At 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_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="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_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="srt_ScenarioUnspecifiedDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Scenario Unspecified [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="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_FirstLienRevolvingLoanOctoberTwoThousandTwentyTwoMember_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_FirstLienRevolvingLoanOctoberTwoThousandTwentyTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First Lien Revolving Loan October Two Thousand Twenty Two.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienRevolvingLoanOctoberTwoThousandTwentyTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Revolving Loan October Two Thousand Twenty Two [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_StructuredProductDueJuneTwoThousandThirtyOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Structured product due June Two Thousand Thirty One.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_StructuredProductDueJuneTwoThousandThirtyOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Structured Product Due June Two Thousand Thirty One [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_StructuredProductDueJuneTwoThousandThirtyOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Structured Product due 6/2031</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 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_DebtConversionPrincipalAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Debt conversion principal amount.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_DebtConversionPrincipalAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Conversion Principal Amount</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_DebtConversionPrincipalAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt conversion principal amount</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 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="srt_SegmentGeographicalDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Segment Geographical [Domain]</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_RangeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Range [Member]</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="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="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="us-gaap_SubsidiarySaleOfStockAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Subsidiary 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_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="us-gaap_AmortizationOfDebtDiscountPremium_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Amortization Of Debt Discount Premium</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AmortizationOfDebtDiscountPremium_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Amortization of discount on debt</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_MidoceanCreditCloLtdSeries20189AMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">MidOcean Credit CLO Ltd, Series 2018-9A.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_MidoceanCreditCloLtdSeries20189AMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">MidOcean Credit CLO Ltd, Series 2018-9A</link:label>
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    <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>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_ObligorGroupMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Obligor Group</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="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="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_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_PercentageOfWeightedCumulativeRealizedCapitalGainsLessCumulativeRealizedCapitalLossesAndUnrealizedCapitalLosses_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">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_PercentageOfWeightedCumulativeRealizedCapitalGainsLessCumulativeRealizedCapitalLossesAndUnrealizedCapitalLosses_lbl" xlink:role="http://www.xbrl.org/2003/role/label">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_PercentageOfWeightedCumulativeRealizedCapitalGainsLessCumulativeRealizedCapitalLossesAndUnrealizedCapitalLosses_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="us-gaap_RealizedInvestmentGainsLossesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Realized losses:</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="ck0001925309_DebtInstrumentInterestRateAverageOneMonthLondonInterbankOfferedRate_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Debt instrument interest rate average one-month London interbank offered rate.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_DebtInstrumentInterestRateAverageOneMonthLondonInterbankOfferedRate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument Interest Rate Average One Month London Interbank Offered Rate</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_DebtInstrumentInterestRateAverageOneMonthLondonInterbankOfferedRate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Average 1-month LIBOR rate</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="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_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="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="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_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/documentation">Percentage of organization and offering expenses.</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="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="ck0001925309_FirstLienLoanDueDecemberTwoThousandTwentyTwoMember_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_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_HomecareSoftwareSolutionsLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Homecare Software Solutions, LLC.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_HomecareSoftwareSolutionsLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Homecare Software Solutions L L C [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_HomecareSoftwareSolutionsLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Homecare Software Solutions, LLC</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="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/label">Proceeds From Issuance Of Common Stock</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_TRPAssetsLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">TRP Assets, LLC.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_TRPAssetsLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">T R P Assets L L C [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_TRPAssetsLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">TRP Assets, LLC</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 For Period 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_PaymentsForSettlementsOfInterestRateSwapsRelatedToConvertibleNotes_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Payments for settlements of interest rate swaps related to convertible notes</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PaymentsForSettlementsOfInterestRateSwapsRelatedToConvertibleNotes_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Payments for Settlements of Interest Rate Swaps Related to Convertible Notes</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PaymentsForSettlementsOfInterestRateSwapsRelatedToConvertibleNotes_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Payments for settlements of interest rate swaps related to convertible notes.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IncentiveFeesOnNetCapitalGains_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Incentive fees on net capital gains.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IncentiveFeesOnNetCapitalGains_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Incentive Fees On Net Capital Gains</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IncentiveFeesOnNetCapitalGains_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Incentive fees on net capital gains</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 Capital1</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>
    <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_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="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/documentation">Organization and offering expenses.</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="us-gaap_DerivativeFairValueOfDerivativeNet_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">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 Of Derivative Net</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_FirstLienLoanDueJulyTwentyTwentyFourMember_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_FirstLienLoanDueJulyTwentyTwentyFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First-Lien Loan due July Twenty Twenty Four [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueJulyTwentyTwentyFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First-Lien Loan due July Twenty Twenty Four.</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="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="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_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_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_SubsequentEventsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Subsequent Events [Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Subsequent Events</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">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">Nondesignated [Member]</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 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/label">Weighted Average Number Of Diluted Shares Outstanding</link:label>
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    <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>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueJanuaryTwoThousandTwentyEightMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First-lien Loan Due January Two Thousand Twenty Eight.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueJanuaryTwoThousandTwentyEightMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due January Two Thousand Twenty Eight [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_CrownPointCloLtdSeriesTwoThousandTwentyOneTenAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Crown Point CLO Ltd, series two thousand twenty one ten A.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_CrownPointCloLtdSeriesTwoThousandTwentyOneTenAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Crown Point CLO Ltd, Series Two Thousand Twenty One Ten A [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_CrownPointCloLtdSeriesTwoThousandTwentyOneTenAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Crown Point CLO Ltd, Series 2021-10A</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 and Cash Equivalents, 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 and cash equivalents, beginning 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/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="ck0001925309_FirstLienLoanDueAprilTwoThousandTwentySixMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Loan 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="ck0001925309_RevolvingCreditFacilityMaturityOnApril232027Member_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Revolving Credit Facility Maturity on April 23, 2027 [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_RevolvingCreditFacilityMaturityOnApril232027Member_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Revolving Credit Facility Maturity on April 23, 2027</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_RevolvingCreditFacilityMaturityOnApril232027Member_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Revolving credit facility maturity on April 23, 2027.</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>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IncentiveFeesRealizedAndPayableToAdvisor_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Incentive fees realized and payable to advisor.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IncentiveFeesRealizedAndPayableToAdvisor_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Incentive Fees Realized And Payable To Advisor</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IncentiveFeesRealizedAndPayableToAdvisor_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Incentive fees realized and payable to advisor</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IRGSEHoldingCorpMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">IRGSE Holding Corp.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IRGSEHoldingCorpMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">I R G S E Holding Corp [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IRGSEHoldingCorpMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">IRGSE Holding Corp.</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_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Changes in Fair Value of Investments for Level 3 Inputs</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 [Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_MagnetiteCloLtdSeriesTwoThousandTwentyOneThirtyAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Magnetite CLO Ltd, series two thousand twenty one thirty A.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_MagnetiteCloLtdSeriesTwoThousandTwentyOneThirtyAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Magnetite CLO Ltd, Series Two Thousand Twenty One Thirty A [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_MagnetiteCloLtdSeriesTwoThousandTwentyOneThirtyAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Magnetite CLO Ltd, Series 2021-30A</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 [Text Block]</link:label>
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    <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_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/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="us-gaap_DebtAndEquitySecuritiesUnrealizedGainLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Net 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</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="ck0001925309_StructuredProductsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Structured products.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_StructuredProductsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Structured Products [member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_StructuredProductsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Structured Products</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="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="ck0001925309_BainCapitalCreditCLOLtdSeriesTwoThousandEighteenOneAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Bain Capital Credit CLO Ltd Series Two Thousand Eighteen One A.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_BainCapitalCreditCLOLtdSeriesTwoThousandEighteenOneAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Bain Capital Credit C L O Ltd Series Two Thousand Eighteen One A [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_BainCapitalCreditCLOLtdSeriesTwoThousandEighteenOneAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Bain Capital Credit C L O Ltd Series Two Thousand Eighteen One A</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_TwoThousandTwentyThreeNotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Two thousand twenty three notes.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_TwoThousandTwentyThreeNotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Two Thousand Twenty Three Notes [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_TwoThousandTwentyThreeNotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2023 Notes</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_NetwrixCorpMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Netwrix Corp.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_NetwrixCorpMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Netwrix Corp [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_NetwrixCorpMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Netwrix Corp.</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_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="us-gaap_InvestmentCompanyInvestmentIncomeLossPerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net investment income</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCreditFacilityCommitmentFeePercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of commitment fee</link:label>
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    <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="us-gaap_StockIssuedDuringPeriodSharesNewIssues_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Issuance of Common Shares, Shares</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 stock, 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/verboseLabel">Investment percent of net assets</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 Percent Of Net Assets</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_ConvertibleNoteDueSeptemberTwoThousandTwentyThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Convertible Note due 9/2023</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_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="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/documentation">First-lien Loan due September Two Thousand Twenty Eight two.</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/label">Net Asset Value Per Share</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/terseLabel">Net Asset Value Per Share</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="ck0001925309_FirstLienLoanDueOctoberTwoThousandTwentyFourTwoMember_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_FirstLienLoanDueOctoberTwoThousandTwentyFourTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First-lien Loan Due October Two Thousand Twenty Four two.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueOctoberTwoThousandTwentyFourTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due October Two Thousand Twenty Four Two [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ClinicientIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Clinicient, Inc.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ClinicientIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Clinicient Inc [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ClinicientIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Clinicient Inc</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ValueOfInvestmentDeclinesManagementFeeAndIncentiveFeeWillBePayableToAdviserMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Value of investment declines, management fee and incentive fee will be payable to adviser.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ValueOfInvestmentDeclinesManagementFeeAndIncentiveFeeWillBePayableToAdviserMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Value of Investment Declines, Management Fee and Incentive Fee will be payable to Adviser [Member]</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 By Fair Value Hierarchy Level [Axis]</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/terseLabel">Fair Value Hierarchy and NAV</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_RisksAssociatedWithConflictsOfInterestMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Risks Associated with Conflicts of Interest.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_RisksAssociatedWithConflictsOfInterestMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Risks Associated with Conflicts of Interest [Member]</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_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_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/terseLabel">First-lien Note due 6/2023</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 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/documentation">Organizational fees.</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="ck0001925309_StructuredProductDueAprilTwoThousandThirtyFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Structured product due April Two Thousand Thirty Four.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_StructuredProductDueAprilTwoThousandThirtyFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Structured Product Due April Two Thousand Thirty Four [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_StructuredProductDueAprilTwoThousandThirtyFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Structured Product due 4/2034</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 Party [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="us-gaap_AdditionalPaidInCapitalCommonStock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Additional paid-in capital</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/label">Additional Paid in Capital, Common Stock</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_BCTOAcePurchaserIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">BCTO Ace Purchaser, Inc.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_BCTOAcePurchaserIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">BCTO Ace Purchaser, Inc.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_BCTOAcePurchaserIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">B C T O Ace Purchaser Inc [Member]</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">Statement 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_StructuredProductDueJulyTwoThousandThirtyFiveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Structured Product Due July Two Thousand Thirty Five [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_StructuredProductDueJulyTwoThousandThirtyFiveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Structured Product due 7/2035</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_StructuredProductDueJulyTwoThousandThirtyFiveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Structured product due July Two Thousand Thirty Five.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueMayTwoThousandTwentyNineMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First lien Loan due may two thousand twenty nine.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueMayTwoThousandTwentyNineMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due May Two Thousand Twenty Nine [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueMayTwoThousandTwentyNineMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Loan due 5/2029</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="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/documentation">Summary of common shares issued and proceeds received.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ClearCompanyLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">ClearCompany, LLC.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ClearCompanyLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Clear Company L L C [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ClearCompanyLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Clear Company L L C</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_JonasCollectionsAndRecoveryIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Jonas Collections and Recovery, Inc.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_JonasCollectionsAndRecoveryIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Jonas Collections And Recovery Inc [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_JonasCollectionsAndRecoveryIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Jonas Collections and Recovery, Inc.</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_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/terseLabel">First-lien Loan due 12/2026</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_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="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/documentation">Summary of industry composition of investments at fair value.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_MDAmericaEnergyLimitedLiabilityCompanyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">MD America Energy Limited Liability Company.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_MDAmericaEnergyLimitedLiabilityCompanyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">M D America Energy Limited Liability Company [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_MDAmericaEnergyLimitedLiabilityCompanyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">MD America Energy LLC</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_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="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_NinetyNineCentsOnlyStoresLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">99 Cents Only Stores LLC.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_NinetyNineCentsOnlyStoresLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Ninety Nine Cents Only Stores L L C [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_NinetyNineCentsOnlyStoresLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">99 Cents Only Stores LLC</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_BainCapitalCreditCLOLtdMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Bain Capital Credit CLO Ltd.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_BainCapitalCreditCLOLtdMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Bain Capital Credit C L O Ltd [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_BainCapitalCreditCLOLtdMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Bain Capital Credit C L O Ltd</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_DaySmartHoldingsLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">DaySmart Holdings, LLC.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_DaySmartHoldingsLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Day Smart Holdings L L C [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_DaySmartHoldingsLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">DaySmart Holdings, LLC</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_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_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/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_MoranFoodsLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Moran Foods, LLC.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_MoranFoodsLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Moran Foods L L C [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_MoranFoodsLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Moran Foods, LLC</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_StockholdersEquityNoteDisclosureTextBlock_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_StockholdersEquityNoteDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stockholders' Equity Note Disclosure [Text Block]</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">Stockholders 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/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/terseLabel">Stockholders' 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/totalLabel">Total Net Assets</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">Net investment loss</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/label">Investment Income, Net</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_EuroInterbankOfferRateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Euribor</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_EuroInterbankOfferRateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Euro Interbank Offer Rate [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_EuroInterbankOfferRateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Euro Interbank Offer Rate.</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">Income Approach Valuation Technique [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="us-gaap_BaseRateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Base Rate</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BaseRateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Base Rate [Member]</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="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="us-gaap_IncomeStatementLocationAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Income Statement Location [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_CommonStockValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common shares, $0.001 par value; unlimited shares authorized, 7,287,800 shares issued and outstanding</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</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_FirstLienLoanDueJuneTwoThousandTwentyTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Loan due 6/2022</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="us-gaap_StatementEquityComponentsAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Statement 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_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="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_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/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/terseLabel">Deferred financing costs and original issue discounts</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_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_CashAndCashEquivalentsPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cash And Cash Equivalents 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_IndebtednessCouldAdverselyAffectBusinessFinancialConditionsOrResultsOfOperationsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Indebtedness could adversely affect business financial conditions or results of operations.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IndebtednessCouldAdverselyAffectBusinessFinancialConditionsOrResultsOfOperationsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Indebtedness could Adversely Affect Business Financial Conditions or Results of Operations [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AresLoanFundingILtdSeriesTwoThousandTwentyOneAlfaClassEMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Ares Loan Funding I Ltd Series Two Thousand Twenty One ALFA Class E.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AresLoanFundingILtdSeriesTwoThousandTwentyOneAlfaClassEMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Ares Loan Funding I Ltd Series Two Thousand Twenty One ALFA Class E [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AresLoanFundingILtdSeriesTwoThousandTwentyOneAlfaClassEMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Ares Loan Funding I Ltd, Series 2021-ALFA, Class E</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_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="ck0001925309_TwentyTwentyThreeNotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2023 Notes [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_TwentyTwentyThreeNotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Twenty Twenty Three Notes [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_TwentyTwentyThreeNotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Twenty twenty three notes.</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="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="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="us-gaap_OperatingExpensesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Operating Expenses [Abstract]</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ABLFILOTermLoanDueAprilTwoThousandTwentySevenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">A B L F I L O Term Loan Due April Two Thousand Twenty Seven [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ABLFILOTermLoanDueAprilTwoThousandTwentySevenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">A B L F I L O Term Loan Due April Two Thousand Twenty Seven [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ABLFILOTermLoanDueAprilTwoThousandTwentySevenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">ABL FILO Team due 4/2027</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_Project44IncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Project44, Inc.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_Project44IncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Project44 Inc [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_Project44IncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Project44, Inc.</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="us-gaap_DebtInstrumentDescriptionOfVariableRateBasis_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">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="us-gaap_DebtInstrumentDescriptionOfVariableRateBasis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Reference Rate and Spread</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/verboseLabel">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 Day Month And Year</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">Dividends record date</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueJuneTwoThousandTwentyNineMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First lien loan due June two thousand twenty nine.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueJuneTwoThousandTwentyNineMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due June Two Thousand Twenty Nine [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueJuneTwoThousandTwentyNineMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Loan due 6/2029</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PrimeRevenueIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">PrimeRevenue, Inc.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PrimeRevenueIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Prime Revenue Inc [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PrimeRevenueIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">PrimeRevenue, Inc.</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_StructuredProductDueJanuaryTwoThousandThirtyOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Structured Product Due January Two Thousand Thirty One.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_StructuredProductDueJanuaryTwoThousandThirtyOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Structured Product due 1/2031</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="us-gaap_ScheduleOfStockByClassTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule Of Stock By Class [Table]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfStockByClassTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule Of Stock By Class [Table]</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="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="ck0001925309_IlluminateEducationIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Illuminate education, Inc.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IlluminateEducationIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Illuminate Education Inc [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IlluminateEducationIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Illuminate Education, Inc.</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="ck0001925309_CifcCloLtdSeriesTwoThousandEighteenThreeAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">CIFC CLO Ltd, series two thousand eighteen three A.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_CifcCloLtdSeriesTwoThousandEighteenThreeAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">CIFC CLO Ltd, Series Two Thousand Eighteen Three A [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_CifcCloLtdSeriesTwoThousandEighteenThreeAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">CIFC CLO Ltd, Series 2018-3A</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_TwentyTwentyTwoConvertibleNotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2022 Convertible Notes [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_TwentyTwentyTwoConvertibleNotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Twenty Twenty Two Convertible Notes [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_TwentyTwentyTwoConvertibleNotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Twenty twenty two convertible notes.</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="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="ck0001925309_ValantMedicalSolutionsIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Valant Medical Solutions, Inc.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ValantMedicalSolutionsIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Valant Medical Solutions Inc [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ValantMedicalSolutionsIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Valant Medical Solutions Inc</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="ck0001925309_NewportParentHoldingsLPMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Newport Parent Holdings, LP.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_NewportParentHoldingsLPMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Newport Parent Holdings L P [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_NewportParentHoldingsLPMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Newport Parent Holdings, LP</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_GoldentreeCloLtdSeriesTwoThousandTwentySevenAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">GoldenTree CLO Ltd, series two thousand twenty seven A.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_GoldentreeCloLtdSeriesTwoThousandTwentySevenAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">GoldenTree CLO Ltd, Series Two Thousand Twenty Seven A [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_GoldentreeCloLtdSeriesTwoThousandTwentySevenAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">GoldenTree CLO Ltd, Series 2020-7A</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="us-gaap_DividendsPayableTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Dividends Payable [Table]</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_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="ck0001925309_FirstLienLoanDueDecemberTwoThousandTwentySevenOneMember_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_FirstLienLoanDueDecemberTwoThousandTwentySevenOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First-lien Loan Due December Two Thousand Twenty Seven One.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueDecemberTwoThousandTwentySevenOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due December Two Thousand Twenty Seven One [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/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/terseLabel">First-lien Revolving Loan due 10/2025</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="us-gaap_NonoperatingIncomeExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Nonoperating Income Expense</link:label>
    <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_StructuredProductDueOctoberTwoThousandThirtyOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Structured Product Due October Two Thousand Thirty One.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_StructuredProductDueOctoberTwoThousandThirtyOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Structured Product due 10/2031</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Commitments And Contingencies Disclosure [Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Commitments and Contingencies</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="us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accumulated net loss</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accumulated Other Comprehensive Income (Loss), Net of Tax</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Accumulated Other Comprehensive Income (Loss), Net of Tax, Total</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="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_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_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/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_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_AmortizationOfFinancingCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Amortization Of Financing 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_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="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>
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    <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>
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    <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_DestinySolutionsParentHoldingCompanyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Destiny Solutions Parent Holding Company.</link:label>
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    <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_FirstLienLoanDueDecemberTwentyTwentyFiveMember_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_FirstLienLoanDueDecemberTwentyTwentyFiveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due December Twenty Twenty Five [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueDecemberTwentyTwentyFiveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First Lien Loan Due December Twenty Twenty Five.</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>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ElysianFincoLtdMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Elysian Finco Ltd.</link:label>
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    <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>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienRevolvingLoanJuneTwoThousandTwentyThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First-lien Revolving Loan due 6/2023</link:label>
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    <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_StructuredProductDueOctoberTwoThousandThirtyFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Structured product due October Two Thousand Thirty Four.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_StructuredProductDueOctoberTwoThousandThirtyFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Structured Product Due October Two Thousand Thirty Four [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_StructuredProductDueOctoberTwoThousandThirtyFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Structured Product due 10/2034</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_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/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_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="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/documentation">Interest and dividend income recognition.</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="ck0001925309_JeffersonMillCloLtdSeriesTwoThousandFifteenOneAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Jefferson Mill CLO Ltd, series two thousand fifteen one A.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_JeffersonMillCloLtdSeriesTwoThousandFifteenOneAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Jefferson Mill CLO Ltd, Series Two Thousand Fifteen One A [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_JeffersonMillCloLtdSeriesTwoThousandFifteenOneAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Jefferson Mill CLO Ltd, Series 2015-1A</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="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/documentation">Bed Bath and Beyond Inc.</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_CommonStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">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/label">Common Stock [Member]</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 Shares</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 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/terseLabel">Notional Amount</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">Derivative Notional Amount</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="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_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="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="ck0001925309_FirstLienLoanDueDecemberTwoThousandTwentyFiveTwoMember_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_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_KkrCloLtdFortyNineAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">KKR CLO Ltd, forty nine A.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_KkrCloLtdFortyNineAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">KKR CLO Ltd, Forty Nine A [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_KkrCloLtdFortyNineAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">KKR CLO Ltd, 49A</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_SMPAHoldingsLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">SMPA holdings, LLC.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SMPAHoldingsLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">S M P A Holdings L L C [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SMPAHoldingsLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">SMPA Holdings, LLC</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_MinimumPercentageOfAssetCoverage_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Minimum percentage of asset coverage.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_MinimumPercentageOfAssetCoverage_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Minimum Percentage Of Asset Coverage</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_MinimumPercentageOfAssetCoverage_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="srt_StatementGeographicalAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Statement 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_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_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net Increase in Cash and Cash Equivalents</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="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="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_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="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_OfferingFees_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">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/documentation">Offering fees.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_OmnigoSoftwareLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Omnigo Software, LLC</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_OmnigoSoftwareLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Omnigo Software, LLC.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_OmnigoSoftwareLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Omnigo Software L L C [Member]</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="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_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable Recorded Investment By 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_GulfStreamMeridianSeriesTwoThousandTwentyOneFourAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Gulf Stream Meridian, series two thousand twenty one four A.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_GulfStreamMeridianSeriesTwoThousandTwentyOneFourAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Gulf Stream Meridian, Series Two Thousand Twenty One Four A [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_GulfStreamMeridianSeriesTwoThousandTwentyOneFourAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Gulf Stream Meridian, Series 2021-4A</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 Assets And Liabilities Measured On Recurring And Nonrecurring Basis [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="us-gaap_FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net change in unrealized gains</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 Assets Measured On Recurring Basis Change In Unrealized Gain Loss</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="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="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_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="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="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="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_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="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_NetCashProvidedByUsedInOperatingActivities_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net Cash 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_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_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersWithinLevel3_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Transfers within Level 3</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersWithinLevel3_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Within Level 3</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersWithinLevel3_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Fair value measurement with unobservable inputs reconciliation recurring basis asset transfers within level 3.</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_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="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="ck0001925309_CarlyleGlobalMarketStrategiesCLOLtdMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Carlyle Global Market Strategies CLO Ltd.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_CarlyleGlobalMarketStrategiesCLOLtdMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Carlyle Global Market Strategies C L O Ltd [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_CarlyleGlobalMarketStrategiesCLOLtdMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Carlyle Global Market Strategies CLO Ltd.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_CeltraTechnologiesIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Celtra Technologies, Inc.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_CeltraTechnologiesIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Celtra Technologies Inc [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_CeltraTechnologiesIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Celtra Technologies, Inc.</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/verboseLabel">Debt investments</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>
    <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="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="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_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="us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">New Accounting Pronouncements</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_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="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="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_GainsLossesOnExtinguishmentOfDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Gain (Loss) on Extinguishment of Debt, Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GainsLossesOnExtinguishmentOfDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Gains Losses On Extinguishment Of Debt</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GainsLossesOnExtinguishmentOfDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Gain on extinguishment of debt</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_PercentageOfHurdleRateQuarterly_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Percentage of hurdle rate, quarterly.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfHurdleRateQuarterly_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Percentage Of Hurdle Rate Quarterly</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfHurdleRateQuarterly_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of hurdle rate quarterly</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="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="us-gaap_FairValueInputsLevel2Member_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Level 2</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueInputsLevel2Member_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Inputs Level2 [Member]</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">Available For Sale Securities Debt Securities</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="ck0001925309_OtherInvestmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Other investment.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_OtherInvestmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Investment [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_OtherInvestmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other Investment</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_OtherInvestmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Other Investments</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IbisUSBlockerCoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Ibis US Blocker Co.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IbisUSBlockerCoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Ibis U S Blocker Co [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IbisUSBlockerCoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Ibis US Blocker Co.</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/documentation">First lien loan due July two thousand twenty two.</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/terseLabel">First-lien Loan due 7/2022</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="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_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_CommonStockSharesIssued_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Number of 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">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_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_NetInvestmentLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net Investment Loss</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_NetInvestmentLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Net Investment Loss</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_NetInvestmentLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Net investment loss.</link:label>
    <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>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Liabilities</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ProjectPIntermediate2LLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Project P Intermediate 2, LLC.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ProjectPIntermediate2LLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Project P Intermediate2 L L C [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ProjectPIntermediate2LLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Project P Intermediate 2, LLC</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="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_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="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="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="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_AsgIiLlcMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">ASG II, LLC.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AsgIiLlcMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">ASG II, LLC [Member]</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_MississippiResourcesLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Mississippi Resources, LLC.</link:label>
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    <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_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/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_HigherLogicLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Higher Logic, LLC.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_HigherLogicLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Higher Logic L L C [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_HigherLogicLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Higher Logic, LLC</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueJuneTwoThousandTwentyEightMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First Lien Loan Due June Two Thousand Twenty-Eight.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueJuneTwoThousandTwentyEightMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due June Two Thousand Twenty Eight [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueJuneTwoThousandTwentyEightMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First Lien Loan Due 6/2028</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_NeuintelLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Neuintel, LLC.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_NeuintelLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Neuintel L L C [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_NeuintelLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Neuintel, LLC</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="us-gaap_DebtInstrumentAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument [Axis]</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="us-gaap_StockholdersEquityAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stockholders Equity [Abstract]</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TreasuryStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Treasury Stock [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TreasuryStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Treasury Stock</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_EMSLinqIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">EMS Linq, Inc.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_EMSLinqIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">EMS Linq, Inc.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_EMSLinqIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">E M S Linq Inc [Member]</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ManagementFeeWaived_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Management fee waived.</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_PrimePayIntermediateLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">PrimePay Intermediate, LLC.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PrimePayIntermediateLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Prime Pay Intermediate L L C [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PrimePayIntermediateLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">PrimePay Intermediate, LLC</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="ck0001925309_MembershipInterestMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Membership Interest</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_MembershipInterestMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Membership Interest [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_MembershipInterestMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Membership interest.</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 [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_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_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="us-gaap_DividendsDomain_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_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_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_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="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="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_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_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="ck0001925309_IncentiveFeesAccruedRelatedToCapitalGainsFee_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Incentive fees accrued related to capital gains fee</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IncentiveFeesAccruedRelatedToCapitalGainsFee_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Incentive Fees Accrued Related to Capital Gains Fee</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IncentiveFeesAccruedRelatedToCapitalGainsFee_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Incentive fees accrued related to capital gains fee.</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/terseLabel">Net change in unrealized gains 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</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_EatonCloLtdSeriesTwoThousandFifteenOneAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Eaton CLO Ltd, series two thousand fifteen one A.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_EatonCloLtdSeriesTwoThousandFifteenOneAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Eaton CLO Ltd, Series Two Thousand Fifteen One A [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_EatonCloLtdSeriesTwoThousandFifteenOneAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Eaton CLO Ltd, Series 2015-1A</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_MinorityInterestOwnershipPercentageByNoncontrollingOwners_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_TherapeuticsMDIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">TherapeuticsMD, Inc.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_TherapeuticsMDIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Therapeutics M D Inc [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_TherapeuticsMDIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">TherapeuticsMD, Inc.</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">Financing Receivable Recorded Investment 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="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="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_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_StructuredProductDueJulyTwoThousandThirtyTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Structured Product Due July Two Thousand Thirty Two [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_StructuredProductDueJulyTwoThousandThirtyTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Structured Product due 7/2032</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_StructuredProductDueJulyTwoThousandThirtyTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Structured product due July Two Thousand Thirty Two.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_CarvalCloIiiLtdSeriesTwoThousandNineteenTwoAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">CarVal CLO III Ltd, series two thousand nineteen two A.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_CarvalCloIiiLtdSeriesTwoThousandNineteenTwoAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">CarVal CLO III Ltd, Series Two Thousand Nineteen Two A [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_CarvalCloIiiLtdSeriesTwoThousandNineteenTwoAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">CarVal CLO III Ltd, Series 2019-2A</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueAprilTwoThousandTwentyFiveTwoMember_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_FirstLienLoanDueAprilTwoThousandTwentyFiveTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First-lien Loan Due April Two Thousand Twenty Five Two..</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueAprilTwoThousandTwentyFiveTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due April Two Thousand Twenty Five Two [Member]</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>
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    <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_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="us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule Of Available For Sale Securities [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_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_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_HedgingDesignationDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Hedging Designation [Domain]</link:label>
    <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_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="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/documentation">Adjusted term simple secured overnight financing.</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_DividendsPayableCurrentAndNoncurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Dividends Payable Current And Noncurrent</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="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_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="ck0001925309_ConvertibleNoteDueJuneTwentyTwentySevenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Convertible Note due 6/2027</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ConvertibleNoteDueJuneTwentyTwentySevenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Convertible Note Due June Twenty Twenty Seven [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ConvertibleNoteDueJuneTwentyTwentySevenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Convertible Note Due June Twenty Twenty Seven.</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="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_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="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">Deferred Finance 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="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="us-gaap_DebtInstrumentConvertibleConversionPrice1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument Convertible Conversion Price1</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentConvertibleConversionPrice1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt instrument, conversion price</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ExtraHopNetworksIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">ExtraHop Networks, Inc.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ExtraHopNetworksIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Extra Hop Networks Inc [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ExtraHopNetworksIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">ExtraHop Networks Inc.</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="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="us-gaap_InvestmentCompanyInvestmentIncomeLossRatio_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Ratio of net investment income to average net assets</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="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Adjustments to reconcile 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="us-gaap_RetainedEarningsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accumulated Net Loss</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="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="ck0001925309_AdditionalAggregatePrincipalAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Additional aggregate principal amount.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AdditionalAggregatePrincipalAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Additional Aggregate Principal Amount</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AdditionalAggregatePrincipalAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Additional aggregate principal amount</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AxonifyIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Axonify, Inc.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AxonifyIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Axonify Inc [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AxonifyIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Axonify, Inc.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ChemicalsSectorMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Chemicals</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ChemicalsSectorMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Chemicals Sector [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/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="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="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="us-gaap_DividendsAxis_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_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="us-gaap_EquitySecuritiesIndustryMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Equity Securities Industry [Member]</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_FirstLienLoanDueDecemberTwoThousandTwentySixThreeMember_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_FirstLienLoanDueDecemberTwoThousandTwentySixThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First-lien Loan Due December Two Thousand Twenty Six Three.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueDecemberTwoThousandTwentySixThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due December Two Thousand Twenty Six Three [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PassportLabsIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Passport Labs, Inc.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PassportLabsIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Passport Labs Inc [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PassportLabsIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Passport Labs, Inc.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_WindRiverCloLtdSeries20142AMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Wind River CLO Ltd, Series 2014-2A.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_WindRiverCloLtdSeries20142AMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Wind River CLO Ltd, Series 2014-2A</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="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_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="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_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="ck0001925309_CarlyleGlobalMarketStrategiesCloLtdSeriesTwoThousandFourteenFourRaMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Carlyle Global Market Strategies CLO Ltd Series Two Thousand Fourteen-Four RA.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_CarlyleGlobalMarketStrategiesCloLtdSeriesTwoThousandFourteenFourRaMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Carlyle Global Market Strategies CLO Ltd Series Two Thousand Fourteen Four RA [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_CarlyleGlobalMarketStrategiesCloLtdSeriesTwoThousandFourteenFourRaMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Carlyle Global Market Strategies CLO Ltd, Series 2014-4RA</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="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="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_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="ck0001925309_MurchisonOilAndGasLlcMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Murchison Oil and Gas, LLC.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_MurchisonOilAndGasLlcMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Murchison Oil and Gas, LLC [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_MurchisonOilAndGasLlcMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Murchison Oil and Gas, LLC</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="ck0001925309_MDAmericaEnergyLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">MD America Energy LLC.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_MDAmericaEnergyLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">M D America Energy L L C [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_MDAmericaEnergyLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">M D America Energy L L C</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/terseLabel">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/documentation">Other income.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_WorkwellAcquisitionCoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Workwell Acquisition Co.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_WorkwellAcquisitionCoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Workwell Acquisition Co [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_WorkwellAcquisitionCoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Workwell Acquisition Co.</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 discount and offering costs</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_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_PianoSoftwareIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Piano Software, Inc.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PianoSoftwareIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Piano Software Inc [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PianoSoftwareIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Piano Software, Inc.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ErlingLuxBidcoSarlMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">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/terseLabel">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/documentation">Erling Lux Bidco SARL.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AcceoSolutionsIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Acceo Solutions, Inc.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AcceoSolutionsIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Acceo Solutions Inc [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AcceoSolutionsIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Acceo Solutions Inc.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_BiohavenPharmaceuticalsIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Biohaven Pharmaceuticals, Inc.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_BiohavenPharmaceuticalsIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Biohaven Pharmaceuticals Inc [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_BiohavenPharmaceuticalsIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Biohaven Pharmaceuticals, Inc.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_BayshoreIntermediate2LPMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Bayshore Intermediate #2, L.P.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_BayshoreIntermediate2LPMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Bayshore Intermediate2 L P [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_BayshoreIntermediate2LPMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Bayshore Intermediate #2, LP</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_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="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_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_InterestRateSwapMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Rate Swap [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestRateSwapMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest Rate Swap</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/terseLabel">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/documentation">Income taxes, including excise taxes.</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="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_AvidXchangeIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">AvidXchange, Inc.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AvidXchangeIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Avid Xchange Inc [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AvidXchangeIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">AvidXchange, Inc.</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 1/2020</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_IncomeStatementLocationDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Income Statement Location [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_StructuredProductDueMayTwoThousandThirtyOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Structured product due May Two Thousand Thirty One.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_StructuredProductDueMayTwoThousandThirtyOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Structured Product Due May Two Thousand Thirty One [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_StructuredProductDueMayTwoThousandThirtyOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Structured Product due 5/2031</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_WideOrbitIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">WideOrbit, Inc.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_WideOrbitIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Wide Orbit Inc [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_WideOrbitIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">WideOrbit, Inc.</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="ck0001925309_PercentageOfIncentiveFeeRate_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="us-gaap_LongTermDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt (net of deferred financing costs of $2,493)</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_SharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common shares outstanding, end of period</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/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/periodStartLabel">Beginning balance, Shares</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueAugustTwoThousandTwentyFiveOneMember_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_FirstLienLoanDueAugustTwoThousandTwentyFiveOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First-lien loan Due August Two Thousand Twenty Five One.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueAugustTwoThousandTwentyFiveOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due August Two Thousand Twenty Five One [Member]</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_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Increase Decrease In Prepaid Deferred 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="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="ck0001925309_AstraAcquisitionCorpMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Astra acquisition Corp.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AstraAcquisitionCorpMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Astra Acquisition Corp.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AstraAcquisitionCorpMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Astra Acquisition Corp [Member]</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="ck0001925309_InvestmentOwnedInitialAcquisitionDate_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Investment owned initial acquisition date.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InvestmentOwnedInitialAcquisitionDate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment Owned Initial Acquisition Date</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InvestmentOwnedInitialAcquisitionDate_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_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="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_ExtinguishmentOfDebtAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Extinguishment Of Debt Amount</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ExtinguishmentOfDebtAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Extinguishment of debt, amount</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_LegislationAllowsToIncurAdditionalLeverageMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Legislation allows to incur additional leverage.</link:label>
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    <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_IncreaseDecreaseInAccruedInterestReceivableNet_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="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="us-gaap_EarningsPerShareBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Loss 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_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="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="us-gaap_InvestmentsFairValueDisclosure_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Total</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</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="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_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/documentation">Organization policy.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SouthwickParkCloLtdSeries20194AMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Southwick Park CLO Ltd, Series 2019-4A.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SouthwickParkCloLtdSeries20194AMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Southwick Park CLO Ltd, Series 2019-4A</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_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_TradingScreenIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">TradingScreen, Inc.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_TradingScreenIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Trading Screen Inc [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_TradingScreenIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">TradingScreen, Inc.</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 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="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="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_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="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="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/terseLabel">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/documentation">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="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_ReliaQuestHoldingsLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">ReliaQuest Holdings, LLC.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ReliaQuestHoldingsLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Relia Quest Holdings L L C [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ReliaQuestHoldingsLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">ReliaQuest Holdings, LLC</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="us-gaap_ValuationTechniqueAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Valuation Technique [Axis]</link:label>
    <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_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="us-gaap_ProfitLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">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">Profit Loss</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfExcessInProduct_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Percentage of excess in product.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfExcessInProduct_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Percentage Of Excess In Product</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfExcessInProduct_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">In excess of product, percentage</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">Foreign Currency Transaction Gain Loss Unrealized</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) on foreign currency transactions</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>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_GTreasurySSLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">G Treasury SS, LLC</link:label>
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    <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>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueOctoberTwoThousandTwentySixOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due October Two Thousand Twenty Six One [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_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_FirstLienLoanDueMayTwoThousandTwentyFourMember_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_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="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_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="ck0001925309_LineOfCreditFacilityMaturityExtendedNumberOfDay_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Line of credit facility maturity extended number of days</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_LineOfCreditFacilityMaturityExtendedNumberOfDay_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Line Of Credit Facility Maturity Extended Number Of Day</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_LineOfCreditFacilityMaturityExtendedNumberOfDay_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Line of credit facility maturity extended number of day.</link:label>
    <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_DividendsPayableLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Dividends Payable [Line Items]</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>
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    <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_MadisonParkCloSeriesTwoThousandEighteenTwentyEightAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Madison Park CLO, series two thousand eighteen twenty eight A.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_MadisonParkCloSeriesTwoThousandEighteenTwentyEightAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Madison Park CLO, Series Two Thousand Eighteen Twenty Eight A [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_MadisonParkCloSeriesTwoThousandEighteenTwentyEightAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Madison Park CLO, Series 2018-28A</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ModernHireIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Modern Hire, Inc.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ModernHireIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Modern Hire Inc [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ModernHireIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Modern Hire, Inc.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FrontlineTechnologiesGroupLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Frontline technologies group, LLC.</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FrontlineTechnologiesGroupLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Frontline Technologies Group, LLC</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_ForeignCurrencyTransactionGainLossRealized_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Foreign Currency Transaction Gain Loss Realized</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="ck0001925309_CarlyleGlobalMarketStrategiesCLOLtdSeriesTwoThousandEighteenOneAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Carlyle global market strategies CLO Ltd series two thousand eighteen one A.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_CarlyleGlobalMarketStrategiesCLOLtdSeriesTwoThousandEighteenOneAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Carlyle Global Market Strategies C L O Ltd Series Two Thousand Eighteen One A [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_CarlyleGlobalMarketStrategiesCLOLtdSeriesTwoThousandEighteenOneAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Carlyle Global Market Strategies CLO Ltd, Series 2018-1A</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_AmericanMoneyManagementCorpCloLtdSeriesTwoThousandSixteenEighteenAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">American Money Management Corp CLO Ltd Series Two Thousand Sixteen-Eighteen A.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AmericanMoneyManagementCorpCloLtdSeriesTwoThousandSixteenEighteenAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">American Money Management Corp CLO Ltd Series Two Thousand Sixteen Eighteen A [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AmericanMoneyManagementCorpCloLtdSeriesTwoThousandSixteenEighteenAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">American Money Management Corp CLO Ltd, Series 2016-18A</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_RevolvingCreditFacilityMaturityOnFebruary42026Member_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Revolving Credit Facility Maturity on February 4, 2026 [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_RevolvingCreditFacilityMaturityOnFebruary42026Member_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Revolving Credit Facility Maturity on February 4, 2026</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_RevolvingCreditFacilityMaturityOnFebruary42026Member_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Revolving credit facility maturity on February 4, 2026,</link:label>
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    <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_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_DividendPayableDateToBePaidDayMonthAndYear_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Dividend Payable Date To Be Paid Day Month And Year</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/terseLabel">Payment Date</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="ck0001925309_InvestmentCompanyNetCommonShareIssuancePerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net Common Share Issuance</link:label>
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    <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_FirstLienLoanDueSeptemberTwoThousandTwentySixTwoMember_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_FirstLienLoanDueSeptemberTwoThousandTwentySixTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First Lien Loan Due September Two Thousand Twenty Six Two.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FirstLienLoanDueSeptemberTwoThousandTwentySixTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Lien Loan Due September Two Thousand Twenty Six Two [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_EmploymentHeroHoldingsPtyLtdMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Employment Hero Holdings Pty Ltd.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_EmploymentHeroHoldingsPtyLtdMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Employment Hero Holdings Pty Ltd [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_EmploymentHeroHoldingsPtyLtdMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Employment Hero Holdings Pty Ltd.</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersNet_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net, Total</link:label>
    <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="us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Reference Rate and Spread percentage</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_DyeDurhamCorpMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Dye &amp; Durham Corp.</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_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_CommittedCapitalAdditionalAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Additional capital commitments</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_CommittedCapitalAdditionalAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Committed capital additional amount.</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="ck0001925309_KyribaCorpMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Kyriba Corp.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_KyribaCorpMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Kyriba Corp [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_KyribaCorpMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Kyriba Corp.</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="ck0001925309_VerdadResourcesIntermediateHoldingsLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Verdad Resources Intermediate Holdings, LLC</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_VerdadResourcesIntermediateHoldingsLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Verdad Resources Intermediate Holdings, LLC.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_VerdadResourcesIntermediateHoldingsLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Verdad Resources Intermediate Holdings L L C [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DueToAffiliateCurrentAndNoncurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Due To Affiliate Current And Noncurrent</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DueToAffiliateCurrentAndNoncurrent_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_TwentyTwentyFourNotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2024 Notes [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_TwentyTwentyFourNotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Twenty Twenty Four Notes [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_TwentyTwentyFourNotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Twenty twenty four notes.</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="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="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">Debt Instrument Carrying Amount</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="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="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_AresCloLtdSeriesTwoThousandTwentyOneFiftyNineAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Ares CLO Ltd Series Two Thousand Twenty One Fifty Nine A.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AresCloLtdSeriesTwoThousandTwentyOneFiftyNineAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Ares CLO Ltd Series Two Thousand Twenty One Fifty Nine A [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AresCloLtdSeriesTwoThousandTwentyOneFiftyNineAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Ares CLO Ltd, Series 2021-59A</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_DividendsPayableNature_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Dividend</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DividendsPayableNature_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Dividends Payable, Nature</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_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_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="ck0001925309_InterestRateSwapThirteenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Interest rate swap thirteen.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InterestRateSwapThirteenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Rate Swap Thirteen [Member]</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>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_MidoceanCreditCloLtdSeriesTwoThousandSixteenSixAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">MidOcean Credit CLO Ltd, series two thousand sixteen six A.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_MidoceanCreditCloLtdSeriesTwoThousandSixteenSixAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">MidOcean Credit CLO Ltd, Series Two Thousand Sixteen Six A [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_MidoceanCreditCloLtdSeriesTwoThousandSixteenSixAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">MidOcean Credit CLO Ltd, Series 2016-6A</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_TwentyTwentySixNotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2026 Notes [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_TwentyTwentySixNotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Twenty Twenty Six Notes [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_TwentyTwentySixNotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Twenty twenty six notes.</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="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/terseLabel">Other liabilities</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="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/documentation">Capital commitment received form investors.</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="us-gaap_SubsequentEventTypeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Subsequent Event Type [Axis]</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="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="us-gaap_FiscalPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fiscal Period, Policy [Policy Text Block]</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AllegroCloLtdSeriesTwoThousandEighteenOneAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Allegro CLO Ltd Series Two Thousand Eighteen One A.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AllegroCloLtdSeriesTwoThousandEighteenOneAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Allegro CLO Ltd Series Two Thousand Eighteen One A [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AllegroCloLtdSeriesTwoThousandEighteenOneAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Allegro CLO Ltd, Series 2018-1A</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_IntegratedPracticeSolutionsIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Integrated Practice Solutions, Inc.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IntegratedPracticeSolutionsIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Integrated Practice Solutions Inc [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IntegratedPracticeSolutionsIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Integrated Practice Solutions, Inc.</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">Schedule Of Related Party Transactions By Related Party [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="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_TreasuryStockSharesAcquired_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">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/label">Treasury Stock, Shares, Acquired</link:label>
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    <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 Par Or Stated Value Per 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/terseLabel">Common shares, par value</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>
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