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<!-- Copyright (c) 2023 Donnelly Financial Solutions, Inc. All Rights Reserved. -->
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_OutsystemsLuxcoSarlMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">OutSystems Luxco SARL.</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_RevolverMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Revolver [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_RevolverMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Revolver.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentInterestRatePaidInKind_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment, Interest Rate, Paid in Kind</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RatioOfIndebtednessToNetCapital1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Ratio of Indebtedness to Net Capital</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RatioOfIndebtednessToNetCapital1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Asset coverage ratio</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_DividendDeclaredTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Dividend Declared Two [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_DividendDeclaredTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Dividend declared two.</link:label>
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    <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_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_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</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="country_NL_lbl" xlink:role="http://www.xbrl.org/2003/role/label">NETHERLANDS</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="country_NL_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Netherlands</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="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_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value Measurements of Investments</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentCompanyIncentiveAllocationToAverageNetAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Ratio of net expenses to average net assets</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentCompanyIncentiveAllocationToAverageNetAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment Company, Incentive Allocation to Average Net Assets, Percentage</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="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>
    <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_DebtSecuritiesAvailableForSaleTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale [Table]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Securities Available For Sale [Table]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_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_NetRealizedGainsLossesOnInvestmentsAndForeignCurrencyTranslation_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net realized gains (losses) on investments and foreign currency transactions</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="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_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_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="us-gaap_LiabilitiesAndStockholdersEquity_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Liabilities and Equity</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesAndStockholdersEquity_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total Liabilities and Net Assets</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="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="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="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_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="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_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_ScheduleOfAvailableForSaleSecuritiesLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule Of Available For Sale Securities [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="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_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="ck0001925309_UnRealizedInvestmentGainsLossesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Un-realized investment gains (losses).</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_UnRealizedInvestmentGainsLossesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Un Realized Investment Gains Losses [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_UnRealizedInvestmentGainsLossesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net change in unrealized gains (losses):</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="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="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_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="us-gaap_LineOfCreditFacilityInterestRateDuringPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt instrument interest rate subject to credit spread adjustment</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCreditFacilityInterestRateDuringPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Interest amount</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="us-gaap_DebtInstrumentTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Long-Term Debt Instruments [Table]</link:label>
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    <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>
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    <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="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="ck0001925309_ReinvestmentOfDividends_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Reinvestment of dividends during the period</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ReinvestmentOfDividends_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Reinvestment of Dividends</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ReinvestmentOfDividends_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Reinvestment of dividends</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ForeignCurrencyTransactionsAndTranslationsPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Foreign Currency Transactions and Translations Policy [Policy Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ForeignCurrencyTransactionsAndTranslationsPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Foreign Currency</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="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_RelatedPartyTransactionLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Related Party Transaction [Line Items]</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/terseLabel">Related Party Transaction [Line Items]</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_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_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_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_AdditionalPaidInCapitalMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Additional Paid-in Capital [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdditionalPaidInCapitalMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Paid in Capital in Excess of Par</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="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="ck0001925309_HornetsecurityHoldingGmbhMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Hornetsecurity Holding GMBH.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_HornetsecurityHoldingGmbhMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Hornetsecurity Holding GMBH Member</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_HornetsecurityHoldingGmbhMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Hornetsecurity Holding GmbH</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Asset, Recurring Basis, Still Held, Unrealized Gain (Loss)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net change in unrealized gains (losses)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentIssuerAffiliationAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment, Issuer Affiliation [Axis]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="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_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_IncreaseDecreaseInAdditionalPaidInCapital_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Increase decrease in additional paid in capital.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IncreaseDecreaseInAdditionalPaidInCapital_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Increase Decrease in Additional Paid in Capital</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IncreaseDecreaseInAdditionalPaidInCapital_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Increase (decrease) in additional paid in capital</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="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_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_DelayedDrawMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Delayed Draw</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_DelayedDrawMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Delayed Draw [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_DelayedDrawMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Delayed draw.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Measurement Inputs and Valuation Techniques [Table Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value of Level 3 Investments at Fair Value Significant Unobservable Inputs Used in Valuations</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentMaturityDate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument, Maturity Date</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentMaturityDate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt instrument, maturity date</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="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_NetChangeInRealizedGainsLossesOnInvestmentsAndForeignCurrencyTranslation_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total net realized gains (losses)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongTermDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt (net of deferred financing costs of $8,898 and $3,911, respectively)</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_DerivativeContractTypeDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative Contract [Domain]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeContractTypeDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Derivative Contract</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_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="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Measurement Inputs and Valuation Techniques [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_OtherPayablesToAffiliate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other payables to affiliate</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_OtherPayablesToAffiliate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Payables To Affiliate</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_OtherPayablesToAffiliate_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Other payables to affiliate.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="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="us-gaap_DerivativeMaturityDates_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Maturity Date</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeMaturityDates_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Derivative maturity date</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeMaturityDates_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative, Contract End Date</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_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_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_DividendsPayableDateDeclaredDayMonthAndYear_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Date Declared</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DividendsPayableDateDeclaredDayMonthAndYear_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Dividends Payable, Date Declared</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="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_ScenarioUnspecifiedDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Scenario [Domain]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_ScenarioUnspecifiedDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Scenario</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TypeOfArrangementAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Collaborative Arrangement and Arrangement Other than Collaborative [Axis]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SpecifiedRelevantRateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Specified relevant rate.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SpecifiedRelevantRateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Specified Relevant Rate [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SpecifiedRelevantRateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Specified Relevant Rate</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="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="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_PingIdentityHoldingCorporationMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Ping identity holding corporation.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PingIdentityHoldingCorporationMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Ping Identity Holding Corporation [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PingIdentityHoldingCorporationMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Ping Identity Holding Corp.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="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_DividendDeclaredOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Dividend Declared on March 30, 2023</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_DividendDeclaredOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Dividend Declared One [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_DividendDeclaredOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Dividend declared one.</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_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="dei_EntityTaxIdentificationNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Tax Identification Number</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net Investment Income Before Income Taxes</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_NortheastMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Northeast.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_NortheastMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Northeast [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_NortheastMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">United States - Northeast</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_DiscoParentIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Disco parent Inc.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_DiscoParentIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Disco Parent Inc [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_DiscoParentIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Disco Parent, Inc.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Increase (Decrease) in Operating Capital [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Changes in operating assets and liabilities:</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPaidInKindInterest_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Paid-in-kind interest</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPaidInKindInterest_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Paid In Kind Interest</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPaidInKindInterest_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Fair value measurement with unobservable inputs reconciliation recurring basis asset paid-in-kind interest.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_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_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financial Instruments [Domain]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Financial Instruments</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_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="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Balance, End of Period</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Balance, beginning of period</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_BanyanSoftwareHoldingLlcMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Banyan software holding, llc.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_BanyanSoftwareHoldingLlcMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Banyan Software Holding, LLC [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_BanyanSoftwareHoldingLlcMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Banyan Software Holdings, LLC</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InsuranceMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Insurance.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InsuranceMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Insurance [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InsuranceMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Insurance</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeInstrumentRiskAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative Instrument [Axis]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeInstrumentRiskAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Derivative Instrument</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_SegmentGeographicalDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Geographical [Domain]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="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="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="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_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetNetAmortizationOfDiscountOnSecurities_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Fair value measurement with unobservable inputs reconciliation recurring basis asset net amortization of discount on 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/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="us-gaap_InvestmentIncomeNet_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net investment income (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="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_ScheduleOfComponentOfCarryingValueOfConvertibleNotesAndInterestRateTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Component of Carrying Value of Convertible Notes and Interest Rate</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ScheduleOfComponentOfCarryingValueOfConvertibleNotesAndInterestRateTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/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="us-gaap_InvestmentAffiliatedIssuerControlledMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment, Affiliated Issuer, Controlled [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentAffiliatedIssuerControlledMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Controlled, Affiliated Investments</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredFinanceCostsNet_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Deferred financing costs</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredFinanceCostsNet_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Debt Issuance Costs, Net, Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredFinanceCostsNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Issuance Costs, Net</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredFinanceCostsNet_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Deferred financing costs</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RelatedPartyDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Related Party, Type [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_RetainedEarningsAccumulatedDeficit_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Retained Earnings (Accumulated Deficit), Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RetainedEarningsAccumulatedDeficit_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Retained Earnings (Accumulated Deficit)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RetainedEarningsAccumulatedDeficit_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Distributable earnings</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SupplementalCashFlowInformationAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Supplemental Cash Flow Information [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SupplementalCashFlowInformationAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Supplemental Information:</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_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_RetainedEarningsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Retained Earnings [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RetainedEarningsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Distributable Earnings</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="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="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_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, Net</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="us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative Instruments and Hedging Activities Disclosure [Abstract]</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="country_AU_lbl" xlink:role="http://www.xbrl.org/2003/role/label">AUSTRALIA</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="country_AU_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Australia</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_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="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Measurement Inputs and Valuation Techniques [Table]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Table]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_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_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="us-gaap_InvestmentCompanyFinancialHighlightsLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment Company, Financial Highlights [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SubscriptionAgreementsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Subscription Agreements.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SubscriptionAgreementsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Subscription Agreements [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SubscriptionAgreementsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Subscription Agreements</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfPreIncentiveFeeNetInvestmentIncomeQuarterlyAfterCatchUpAchieved_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Percentage of excess pre-incentive fee net investment income, quarterly after catch-up achieved.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfPreIncentiveFeeNetInvestmentIncomeQuarterlyAfterCatchUpAchieved_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Percentage Of Pre Incentive Fee Net Investment Income Quarterly After Catch Up Achieved</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfPreIncentiveFeeNetInvestmentIncomeQuarterlyAfterCatchUpAchieved_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of excess pre-Incentive Fee net investment income quarterly</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InterestRateSwapOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Interest rate swap one.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InterestRateSwapOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Rate Swap One [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InterestRateSwapOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest Rate Swap One</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="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_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Adjustments to reconcile increase (decrease) in net assets resulting from operations to net cash provided by (used in) operating activities:</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentBasisSpreadVariableRate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Reference Rate</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentBasisSpreadVariableRate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment, Basis Spread, Variable Rate</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="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="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="ck0001925309_SummaryOfTaxBasisComponentsOfDistributableEarningsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Summary of tax basis components of distributable earnings.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SummaryOfTaxBasisComponentsOfDistributableEarningsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Summary Of Tax Basis Components Of Distributable Earnings [Table Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SummaryOfTaxBasisComponentsOfDistributableEarningsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Tax Basis Components of Distributable Earnings</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AdjustmentsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Adjustments.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AdjustmentsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Adjustments [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AdjustmentsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Adjustments:</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_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_DebtInstrumentBasisSpreadOnVariableRate1_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Debt Instrument, basis spread on variable rate</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument, Basis Spread on Variable Rate</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Reference Rate and Spread percentage</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="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="us-gaap_ForeignCurrencyTransactionGainLossUnrealized_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Unrealized Gain (Loss), Foreign Currency Transaction, before Tax</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ForeignCurrencyTransactionGainLossUnrealized_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Translation of other assets and liabilities in foreign currencies</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ForeignCurrencyTransactionGainLossUnrealized_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Net change in unrealized (gains) losses on foreign currency transactions</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt, Policy [Policy Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Issuance Costs</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_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="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="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="us-gaap_DebtConversionConvertedInstrumentAmount1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Conversion, Converted Instrument, Amount</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtConversionConvertedInstrumentAmount1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt instrument, principal converted amount</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_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="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="us-gaap_CommonStockValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common shares, $0.001 par value; unlimited shares authorized, 40,712,963 and 21,882,028 shares issued and outstanding, respectively</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock, Value, Issued</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentConvertibleConversionPrice1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument, Convertible, Conversion Price</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_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetRepayment_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Fair value measurement with unobservable inputs reconciliation recurring basis asset repayment.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetRepayment_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Repayment</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetRepayment_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Repayments / redemptions</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ForeignCurrencyTransactionGainLossRealized_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Realized Gain (Loss), Foreign Currency Transaction, before Tax</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ForeignCurrencyTransactionGainLossRealized_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Foreign currency transactions</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ForeignCurrencyTransactionGainLossRealized_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Transfers</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ForeignCurrencyTransactionGainLossRealized_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Net realized (gains) losses on foreign currency transactions</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ForeignCurrencyTransactionGainLossRealized_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Foreign Currency Transaction Gain Loss Realized, Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_CurrentFiscalYearEndDate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Current Fiscal Year End Date</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="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_MeasurementInputTransactionValueMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Measurement input transaction value.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_MeasurementInputTransactionValueMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Measurement Input Transaction Value [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_MeasurementInputTransactionValueMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Transaction value</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeTaxExpenseBenefit_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Income Tax Expense (Benefit), Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeTaxExpenseBenefit_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Income Tax Expense (Benefit)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeTaxExpenseBenefit_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Income taxes, including excise taxes</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SouthMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">South.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SouthMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">South [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SouthMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">United States - South</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="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="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_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_FairValueOfSecuritiesAsPercentageOfNetAssetsInPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Fair value of securities as percentage of net assets in percentage</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FairValueOfSecuritiesAsPercentageOfNetAssetsInPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Of Securities As Percentage Of Net Assets In Percentage</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FairValueOfSecuritiesAsPercentageOfNetAssetsInPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair value of securities as percentage of net assets in percentage</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_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="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="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="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_ValuationTechniqueDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Valuation Approach and Technique [Domain]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ValuationTechniqueDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Valuation Approach and Technique</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FairValueOfSecuritiesAsPercentageOfNetAssetsAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Fair value of securities as percentage of net assets amount.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FairValueOfSecuritiesAsPercentageOfNetAssetsAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Of Securities As Percentage Of Net Assets Amount</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_FairValueOfSecuritiesAsPercentageOfNetAssetsAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair value of securities as percentage of net assets amount</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_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_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_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="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">Other payables to affiliate</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_NetUnrealizedGainsLossesOnInvestments_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Net unrealized gains (losses) on investments.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_NetUnrealizedGainsLossesOnInvestments_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Net Unrealized Gains (Losses) on Investments</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_NetUnrealizedGainsLossesOnInvestments_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net unrealized gains (losses) on investments</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="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 [Policy Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RepaymentsOfShortTermDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Repayments of Short-Term Debt, Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RepaymentsOfShortTermDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Repayments of Short-Term Debt</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RepaymentsOfShortTermDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Repayments on debt</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RepaymentsOfShortTermDebt_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Repayments on debt</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentCompanyGainLossOnInvestmentPerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment Company, Gain (Loss) on Investment, Per Share</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentCompanyGainLossOnInvestmentPerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net realized and unrealized gain (loss)</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_OperatingExpensesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Operating Expenses [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingExpensesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Expenses</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_OtherTemporaryDifferences_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Other temporary differences.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_OtherTemporaryDifferences_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Temporary Differences</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_OtherTemporaryDifferences_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Other temporary differences</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_DebtSecuritiesAvailableForSaleTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale [Table Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Investments at Fair Value</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_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_InternetServicesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Internet Services.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InternetServicesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Internet Services [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InternetServicesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Internet Services</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AlternativeBaseRateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Alternative base rate.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AlternativeBaseRateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Alternative Base Rate [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AlternativeBaseRateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Alternative Base Rate</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_TaxableIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Taxable income.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_TaxableIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Taxable Income</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_TaxableIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Taxable Income</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">Equity [Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestPaidNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Paid, Excluding Capitalized Interest, Operating Activities</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestPaidNet_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest paid during the period</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_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="ck0001925309_InterestRateSwapSixMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Interest rate swap six.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InterestRateSwapSixMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Rate Swap Six [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InterestRateSwapSixMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest Rate Swap Six</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentIssuerAffiliationDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment, Issuer Affiliation [Domain]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="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="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="us-gaap_StockholdersEquityAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Equity, Attributable to Parent [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockholdersEquityAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net Assets</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="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_InvestmentOwnedAtFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment Owned, Fair Value</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentOwnedAtFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Fair Value, Ending balance</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentOwnedAtFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Fair Value, Beginning balance</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentOwnedAtFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">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/verboseLabel">Investments at fair value</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_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="us-gaap_DerivativeFairValueHedgeIncludedInEffectivenessGainLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Adjustment in carrying value result from hedge accounting</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeFairValueHedgeIncludedInEffectivenessGainLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Gain (loss) on fair value effective hedge</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeFairValueHedgeIncludedInEffectivenessGainLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative, Fair Value Hedge, Included in Effectiveness, Gain (Loss)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_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_EarningsPerShareAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Earnings Per Share [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentCompanyIncentiveFeeToAverageNetAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment Company, Incentive Fee to Average Net Assets</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentCompanyIncentiveFeeToAverageNetAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Portfolio turnover</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="country_LU_lbl" xlink:role="http://www.xbrl.org/2003/role/label">LUXEMBOURG</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="country_LU_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Luxembourg</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="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_UndistributedNetInvestmentIncomeTaxBasis_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Undistributed net investment income - tax basis.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_UndistributedNetInvestmentIncomeTaxBasis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Undistributed Net Investment Income - Tax Basis</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_UndistributedNetInvestmentIncomeTaxBasis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Undistributed net investment income - tax basis</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfPreIncentiveFeeNetInvestmentIncomePayableQuarterlySubsequentToExchangeListing_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of pre-incentive fee net investment income payable quarterly subsequent to exchange listing</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_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_AccountingPoliciesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accounting Policies [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_StatementScenarioAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Scenario [Axis]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_StatementScenarioAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Scenario</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_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_RealizedInvestmentGainsLossesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Realized Investment Gains (Losses) [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RealizedInvestmentGainsLossesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Realized gains (losses):</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisGainLossIncludedInEarningsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Table Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisGainLossIncludedInEarningsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net Change in Unrealized Gains or Losses on Investments for Which Level 3 Inputs were Used in Determining Fair Value</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_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_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_DividendsPayableCurrentAndNoncurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Distributions declared</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DividendsPayableCurrentAndNoncurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Dividends Payable</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DividendsPayableCurrentAndNoncurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Dividends payable</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Earnings (losses) per common share - basic</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Earnings per common share-basic</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/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_ManufacturingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Manufacturing.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ManufacturingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Manufacturing [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ManufacturingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Manufacturing</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfExcessPreIncentiveFeeNetInvestmentIncomeForImmediatePrecedingCalendarQuarter_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Percentage of excess pre-incentive fee net investment income for immediate preceding calendar quarter.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfExcessPreIncentiveFeeNetInvestmentIncomeForImmediatePrecedingCalendarQuarter_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Percentage Of Excess Pre Incentive Fee Net Investment Income For Immediate Preceding Calendar Quarter</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfExcessPreIncentiveFeeNetInvestmentIncomeForImmediatePrecedingCalendarQuarter_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of excess pre-incentive fee net investment income for immediate preceding calendar quarter</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AdviserMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Adviser.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AdviserMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Adviser [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AdviserMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Adviser</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PaidInKindInterestIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Paid-in-kind interest income</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PaidInKindInterestIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Paid-In-Kind Interest Income</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PaidInKindInterestIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Paid-in-kind interest income.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="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="ck0001925309_NonControlledNonAffiliatedInvestmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Non-controlled, non-affiliated investments.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_NonControlledNonAffiliatedInvestmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Non Controlled Non Affiliated Investments [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_NonControlledNonAffiliatedInvestmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Non-controlled, Non-affiliated Investments</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_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_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="us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Related Party, Type [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_InvestmentCompanyNetAssetValuePerSharePeriodIncreaseDecrease_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total increase (decrease) in net assets</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentCompanyNetAssetValuePerSharePeriodIncreaseDecrease_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Total increase (decrease) in net assets</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentCompanyNetAssetValuePerSharePeriodIncreaseDecrease_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment Company, Net Asset Value Per Share, Period Increase (Decrease)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_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="srt_RangeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Statistical Measurement [Domain]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_RangeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Statistical Measurement</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LossContingenciesLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Loss Contingencies [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LossContingenciesLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Loss Contingencies [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InvestmentCompanyDividendDeclaredPerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Dividends Declared</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InvestmentCompanyDividendDeclaredPerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Investment company dividend declared per share.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InvestmentCompanyDividendDeclaredPerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment Company Dividend Declared Per Share</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="us-gaap_NetCashProvidedByUsedInOperatingActivities_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net Cash Provided by (Used in) Operating Activities</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongTermDebtWeightedAverageInterestRateOverTime_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted average interest rate</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongTermDebtWeightedAverageInterestRateOverTime_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Long-Term Debt, Weighted Average Interest Rate, over Time</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InvestmentsFairValueDisclosureNet_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Investments fair value disclosure net.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InvestmentsFairValueDisclosureNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investments Fair Value Disclosure Net</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InvestmentsFairValueDisclosureNet_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_OrganizationalFees_lbl" xlink:role="http://www.xbrl.org/2003/role/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="ck0001925309_OrganizationalFees_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Organizational expense</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IncreaseDecreaseInIncentiveFeesOnNetInvestmentIncomePayableToAffiliate_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Increase decrease in incentive fees on net investment income payable to affiliate.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IncreaseDecreaseInIncentiveFeesOnNetInvestmentIncomePayableToAffiliate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Increase Decrease In Incentive Fees On Net Investment Income Payable To Affiliate</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IncreaseDecreaseInIncentiveFeesOnNetInvestmentIncomePayableToAffiliate_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Incentive fees on net investment income payable to affiliate</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="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="srt_RangeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Statistical Measurement [Axis]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_RangeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Statistical Measurement</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_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>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IssuanceOfLettersOfCreditUpToAnAggregateAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Issuance Of Letters Of Credit Up To An Aggregate Amount</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IssuanceOfLettersOfCreditUpToAnAggregateAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Issuance of letters of credit up to an aggregate amount</link:label>
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    <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="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="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Sale Proceeds</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UnrecognizedTaxBenefits_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Unrecognized Tax Benefits, Beginning Balance</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UnrecognizedTaxBenefits_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Unrecognized Tax Benefits, Ending Balance</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UnrecognizedTaxBenefits_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Unrecognized Tax Benefits</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_CommercehubIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Commercehub, Inc.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_CommercehubIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Commercehub, Inc. [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_CommercehubIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Commercehub, Inc.</link:label>
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    <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="us-gaap_DebtInstrumentNameDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Instrument, Name</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_CurrentMarketPricePerSharePercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Current price per share, Percentage</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_CurrentMarketPricePerSharePercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/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="us-gaap_FairValueMeasurementsFairValueHierarchyDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Hierarchy and NAV [Domain]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementsFairValueHierarchyDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value Hierarchy and NAV</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_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="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_DebtInstrumentIncreaseDecreaseForPeriodNet_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Debt Instrument, Increase (Decrease), Net, Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentIncreaseDecreaseForPeriodNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument, Increase (Decrease), Net</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentIncreaseDecreaseForPeriodNet_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Increase (decrease) in carrying value of notes</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_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_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="us-gaap_AdditionalPaidInCapitalCommonStock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Additional paid-in capital</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_CapitalGainsAccrueFollowingMarchThirtyFirstTwoThousandFourteenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Capital gains accrue following March 31, 2014.</link:label>
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    <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>
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    <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>
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    <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_SterlingOvernightInterbankAverageRateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">SONIA</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SterlingOvernightInterbankAverageRateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Sterling Overnight Interbank Average Rate.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_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_DelayedDrawRevolverMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Delayed Draw &amp; Revolver</link:label>
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    <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="dei_EntityAddressPostalZipCode_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Address, Postal Zip Code</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_MinimumPercentageOfVotingSecuritiesInInvestmentPortfolio_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Minimum percentage of voting securities in investment portfolio.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_MinimumPercentageOfVotingSecuritiesInInvestmentPortfolio_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Minimum Percentage Of Voting Securities In Investment Portfolio</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_MinimumPercentageOfVotingSecuritiesInInvestmentPortfolio_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Minimum percentage of voting securities</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_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="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_CreditFacilityDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Credit Facility [Domain]</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_NetExpenseForFederalExciseTaxAndOtherTaxes_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net expense for U.S. federal excise tax and other taxes</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_NetExpenseForFederalExciseTaxAndOtherTaxes_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Net expense for federal excise tax and other taxes</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EquityAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Equity [Abstract]</link:label>
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    <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="dei_EntityIncorporationStateCountryCode_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Incorporation, State or Country Code</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ExciseAndSalesTaxes_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net expense</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentCompanyFinancialHighlightsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment Company, Financial Highlights [Table Text Block]</link:label>
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    <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>
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    <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_InvestmentsDebtAndEquitySecuritiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investments, Debt and Equity Securities [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_LineOfCreditFacilityStatedMaturityDate_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Line of credit facility, stated maturity date.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_LineOfCreditFacilityStatedMaturityDate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Line Of Credit Facility Stated Maturity Date</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_LineOfCreditFacilityStatedMaturityDate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Line of credit facility, stated maturity date</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_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="us-gaap_SubsidiarySaleOfStockAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Sale of Stock [Axis]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsidiarySaleOfStockAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Sale of Stock</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AgreementTerminationPeriodWithoutPenalty_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Agreement termination period, without penalty.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AgreementTerminationPeriodWithoutPenalty_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Agreement Termination Period Without Penalty</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AgreementTerminationPeriodWithoutPenalty_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Agreement termination period</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtConversionConvertedInstrumentSharesIssued1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Conversion, Converted Instrument, Shares Issued</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtConversionConvertedInstrumentSharesIssued1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt conversion, shares Issued</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DesignatedAsHedgingInstrumentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Designated as Hedging Instrument [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DesignatedAsHedgingInstrumentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Designated As Hedging Instrument</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_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_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="us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Table]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_RapidDataGmbhUnternehmensberatungMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Rapid Data GmbH Unternehmensberatung</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_RapidDataGmbhUnternehmensberatungMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Rapid Data GmbH Unternehmensberatung [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_RapidDataGmbhUnternehmensberatungMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Rapid Data GmbH Unternehmensberatung.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_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_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_IncomeTaxAuthorityDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Income Tax Authority [Domain]</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_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersNet_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Transfers into (out of) Level 3</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/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="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="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="us-gaap_CommonStockParOrStatedValuePerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Common stock, price 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/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="ck0001925309_BctoBluebillBuyerIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">BCTO Bluebill Buyer, Inc.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_BctoBluebillBuyerIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">BCTO Bluebill Buyer, Inc. [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_BctoBluebillBuyerIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">BCTO Bluebill Buyer, Inc.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AlaskaBidcoOyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Alaska bidco oy member.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AlaskaBidcoOyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Alaska Bidco Oy</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AlaskaBidcoOyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Alaska Bidco Oy [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PrincipalAmountOutstandingAndAccruedInterest_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Principal amount outstanding and accrued interest.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PrincipalAmountOutstandingAndAccruedInterest_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Principal Amount Outstanding and Accrued Interest</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PrincipalAmountOutstandingAndAccruedInterest_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Principal amount outstanding and accrued interest</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_AffiliatedEntityMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Affiliate</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_AffiliatedEntityMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Affiliated Entity [Member]</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_NetExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Net Expense.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_NetExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Net Expense</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_NetExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net Expenses</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ForeignCurrencyTransactionGainLossRealized1_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Foreign currency transaction gain loss realized 1.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ForeignCurrencyTransactionGainLossRealized1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Foreign Currency Transaction Gain Loss Realized 1</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ForeignCurrencyTransactionGainLossRealized1_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Net realized (gains) losses on foreign currency transactions</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InvestmentAdvisoryAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Investment advisory agreement.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InvestmentAdvisoryAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment Advisory Agreement [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InvestmentAdvisoryAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Investment Advisory Agreement</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="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_AmericanAchievementCorpMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">American Achievement, Corp.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AmericanAchievementCorpMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">American Achievement Corp [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AmericanAchievementCorpMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">American Achievement Corp</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InterestRateSwapTenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Interest rate swap ten.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InterestRateSwapTenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Rate Swap Ten [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InterestRateSwapTenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest Rate Swap Ten</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="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_SupplementalDividendMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Supplemental dividend.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SupplementalDividendMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Supplemental Dividend [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SupplementalDividendMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Supplemental</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RelatedPartyTransactionAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Related Party Transaction [Axis]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RelatedPartyTransactionAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Related Party Transaction</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_CapitalCommitmentsRemainingUndrawn_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Capital commitments remaining undrawn</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_CapitalCommitmentsRemainingUndrawn_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Capital Commitments Remaining Undrawn</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_CapitalCommitmentsRemainingUndrawn_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Capital commitments remaining undrawn.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCreditFacilityAverageOutstandingAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Line of Credit Facility, Average Outstanding Amount</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCreditFacilityAverageOutstandingAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Average debt outstanding (in millions)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_TwoThousandTwentyThreeAndTwentyFourAndTwentySixNotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Two thousand twenty three and twenty four and twenty six notes.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_TwoThousandTwentyThreeAndTwentyFourAndTwentySixNotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Two Thousand Twenty Three And Twenty Four And Twenty Six Notes [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_TwoThousandTwentyThreeAndTwentyFourAndTwentySixNotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2023 Notes, 2024 Notes and 2026 Notes</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsOfDividends_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Dividends paid to shareholders</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueInputsLevel3Member_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Level 3</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_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="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="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_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net Increase (Decrease) in Cash and Cash Equivalents</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ProceedsFromSettlementsOfInterestRateSwapsExcludingUpfrontFees_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Proceeds from settlements of interest rate swaps excluding upfront fees.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ProceedsFromSettlementsOfInterestRateSwapsExcludingUpfrontFees_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Proceeds From Settlements Of Interest Rate Swaps Excluding Upfront Fees</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ProceedsFromSettlementsOfInterestRateSwapsExcludingUpfrontFees_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Proceeds from settlements of interest rate swaps excluding upfront fees</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SummaryOfReconciliationIncreaseInNetAssetsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Summary of reconciliation increase in net assets.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SummaryOfReconciliationIncreaseInNetAssetsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Summary Of Reconciliation Increase In Net Assets [Table Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SummaryOfReconciliationIncreaseInNetAssetsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Reconciliation Increase in Net Assets</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AdjustedDailySimpleSecuredOvernightFinancingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Adjusted Daily SOFR</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AdjustedDailySimpleSecuredOvernightFinancingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Adjusted Daily Simple Secured Overnight Financing [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AdjustedDailySimpleSecuredOvernightFinancingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Adjusted daily simple secured overnight financing.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ReimbursementOfTransactionRelatedExpensesPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Reimbursement of Transaction-Related Expenses</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ReimbursementOfTransactionRelatedExpensesPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Reimbursement Of Transaction Related Expenses [Policy Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ReimbursementOfTransactionRelatedExpensesPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Reimbursement of transaction-related expenses.</link:label>
    <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_ElysianFincoLtdMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Elysian Finco Ltd.</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GeneralAndAdministrativeExpenseMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other General and Administrative Expenses</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_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="ck0001925309_PercentageOfInvestmentsAtFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Investment fair value percentage</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfInvestmentsAtFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Percentage of investments at fair value.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfInvestmentsAtFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Percentage Of Investments At Fair Value</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NoncashInvestingAndFinancingItemsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Non-Cash Financing Activities:</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherGeneralAndAdministrativeExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other General and Administrative Expense</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherGeneralAndAdministrativeExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other general and administrative</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_DividendsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Dividends.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_DividendsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Dividends [Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_DividendsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Dividends</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ChemicalsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Chemicals</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ChemicalsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Chemicals [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ChemicalsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Chemicals.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InterestRateSwapTwelveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Interest rate swap twelve.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InterestRateSwapTwelveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Rate Swap Twelve [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InterestRateSwapTwelveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest Rate Swap Twelve</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_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_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="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="ck0001925309_NetInvestmentGainLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Net investment gain (loss).</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_NetInvestmentGainLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Net Investment Gain Loss</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_NetInvestmentGainLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net Investment Income</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_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_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="us-gaap_InvestmentCompanyFinancialHighlightsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment Company, Financial Highlights [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_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>
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    <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="ck0001925309_IncentiveFeesOnCapitalGains_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Incentive fees on capital gains.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IncentiveFeesOnCapitalGains_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Incentive Fees On Capital Gains</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IncentiveFeesOnCapitalGains_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Incentive Fees on Capital Gains</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AvalaraIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Avalara, Inc.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AvalaraIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Avalara, Inc [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AvalaraIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Avalara, Inc.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentCompanyInvestmentIncomeLossPerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net investment income</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentCompanyInvestmentIncomeLossPerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment Company, Investment Income (Loss), Per Share</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_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_StockIssuedDuringPeriodSharesDividendReinvestmentPlan_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Shares Issued</link:label>
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    <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="us-gaap_GainsLossesOnExtinguishmentOfDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Gain (Loss) on Extinguishment of Debt, Total</link:label>
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    <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_OfferingFees_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Offering expense</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="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="us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Related Party Transactions, by Related Party [Table]</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_MinimumPercentageOfInvestmentCompanyTaxableIncomeDistributeToStockholdersInEachTaxableYearToQualifyAsRIC_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Minimum Percentage Of Investment Company Taxable Income Distribute To Stockholders In Each Taxable Year To Qualify As R I C</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_MinimumPercentageOfInvestmentCompanyTaxableIncomeDistributeToStockholdersInEachTaxableYearToQualifyAsRIC_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Minimum percentage of investment company taxable income distribute to stockholders in each taxable year to qualify as RIC.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="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_InvestmentPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment, Policy [Policy Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Investments at Fair Value</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="country_GB_lbl" xlink:role="http://www.xbrl.org/2003/role/label">UNITED KINGDOM</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueNetAssetLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Fair Value, Net Asset (Liability), Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueNetAssetLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Net Asset (Liability)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueNetAssetLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net assets, end of period</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_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">Not Designated as Hedging Instrument [Member]</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_StatementLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Statement [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Statement [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_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_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="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="country_FI_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Finland</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="country_FI_lbl" xlink:role="http://www.xbrl.org/2003/role/label">FINLAND</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_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="ck0001925309_SkylarkUkDebtcoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">SkyLark UK DebtCo</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SkylarkUkDebtcoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">SkyLark UK DebtCo [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SkylarkUkDebtcoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">SkyLark UK DebtCo.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_ObligorGroupMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Obligor Group [Member]</link:label>
    <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="ck0001925309_EstimatedGrossUnrealizedLossOnTaxCostInvestment_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Estimated gross unrealized loss on tax cost investment.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_EstimatedGrossUnrealizedLossOnTaxCostInvestment_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Estimated Gross Unrealized Loss on Tax Cost Investment</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_EstimatedGrossUnrealizedLossOnTaxCostInvestment_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Estimated gross unrealized loss on tax cost investment</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_RepaymentsOnInvestments_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Repayments on investments</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_RepaymentsOnInvestments_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Repayments On Investments</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_RepaymentsOnInvestments_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Repayments on investments.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiscalPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fiscal Period, Policy [Policy Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiscalPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fiscal Year End</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="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="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_DebtInstrumentLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Instrument [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="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_StockIssuedDuringPeriodValueDividendReinvestmentPlan_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stock Issued During Period, Value, Dividend Reinvestment Plan</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodValueDividendReinvestmentPlan_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Stock issued in connection with dividend reinvestment plan</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cash and cash equivalents</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Cash and Cash Equivalents, at Carrying Value, Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cash and Cash Equivalents, at Carrying Value</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_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_GalileoParentincMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Galileo Parent Inc</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_GalileoParentincMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Galileo ParentInc [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_GalileoParentincMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Galileo parentInc member.</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_OtherNonOperatingFeeIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other fee income</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_OtherNonOperatingFeeIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Non operating Fee Income</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_OtherNonOperatingFeeIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Other non operating fee income.</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="us-gaap_TradingSecuritiesDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Lien debt investments</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TradingSecuritiesDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Second-lien debt investments</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TradingSecuritiesDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Trading</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_EdgeBidcoBVMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Edge Bidco B.V.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_EdgeBidcoBVMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Edge Bidco B V [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_EdgeBidcoBVMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Edge Bidco B.V</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="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_InvestmentOwnedBalanceShares_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment Owned, Balance, Shares</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentOwnedBalanceShares_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Investment, shares</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="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_SellingGeneralAndAdministrativeExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Expenses incurred</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SellingGeneralAndAdministrativeExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Selling, General and Administrative Expense, Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_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="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="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>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AsgIiLlcMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">ASG II, LLC</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_BtrsHoldingIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">BTRS Holding Inc. [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_BtrsHoldingIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">BTRS Holding Inc. [Member]</link:label>
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    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_TaxCostOfInvestments_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Tax cost of investments.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_TaxCostOfInvestments_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Tax Cost of Investments</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_TaxCostOfInvestments_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Tax cost of investments</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_TaxCostOfInvestments_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Estimated cost basis of investments for U.S. federal tax purposes</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetRecurringBasisStillHeldUnrealizedGainLossStatementOfIncomeExtensibleList_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Asset, Recurring Basis, Still Held, Unrealized Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="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="us-gaap_SaleOfStockNameOfTransactionDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Sale of Stock [Domain]</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/terseLabel">Sale of Stock</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_PercentageOfMinimumQualifyingAssetsToPurchaseNonQualifyingAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of minimum qualifying assets to purchase non qualifying assets</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfMinimumQualifyingAssetsToPurchaseNonQualifyingAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Percentage Of Minimum Qualifying Assets To Purchase Non Qualifying Assets</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_PercentageOfMinimumQualifyingAssetsToPurchaseNonQualifyingAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Percentage of minimum qualifying assets to purchase non-qualifying assets.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_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_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>
    <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_IncentiveFeesOnNetInvestmentIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Incentive fees on net investment income</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IncentiveFeesOnNetInvestmentIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Incentive Fees On Net Investment Income</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IncentiveFeesOnNetInvestmentIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Incentive fees on net investment income.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IncentiveFeesOnNetInvestmentIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Incentive fees realized and payable to advisor</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_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_DomesticCountryMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Domestic Tax Authority [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DomesticCountryMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">U.S. Federal Tax</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_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_NewAccountingPronouncementsPolicyPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">New Accounting Pronouncements, Policy [Policy Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Recent Accounting Standards and Regulatory Updates</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="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="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_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/documentation">Net change in unrealized gains (losses) on investments and foreign currency translation.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_NetChangeInUnrealizedGainsLossesOnInvestmentsAndForeignCurrencyTranslation_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Net Change In Unrealized Gains Losses On Investments And Foreign Currency Translation</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_NetChangeInUnrealizedGainsLossesOnInvestmentsAndForeignCurrencyTranslation_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Net unrealized (gains) losses on investments</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_NetChangeInUnrealizedGainsLossesOnInvestmentsAndForeignCurrencyTranslation_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net change in unrealized gains (losses) on investments and foreign currency translation</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_NetChangeInUnrealizedGainsLossesOnInvestmentsAndForeignCurrencyTranslation_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total net change in unrealized gains (losses)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_NetChangeInUnrealizedGainsLossesOnInvestmentsAndForeignCurrencyTranslation_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Net unrealized (gains) losses on investments</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EquitySecuritiesByIndustryAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Industry Sector [Axis]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EquitySecuritiesByIndustryAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Industry Sector</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_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_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="us-gaap_TreasuryStockSharesAcquired_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Treasury Stock, Shares, Acquired</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TreasuryStockSharesAcquired_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Purchases of treasury stock, Shares</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_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="dei_EntityEmergingGrowthCompany_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Emerging Growth Company</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_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="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_UndistributedEarnings_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Undistributed Earnings, Basic</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UndistributedEarnings_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total distributable earnings - book basis</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestIncomeOperatingPaidInKind_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Income, Operating, Paid in Kind</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestIncomeOperatingPaidInKind_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Paid-in-kind interest</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentCompanyRealizedAndUnrealizedGainLossOnInvestmentAndForeignCurrencyAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Unrealized and Realized Gains (losses):</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentCompanyRealizedAndUnrealizedGainLossOnInvestmentAndForeignCurrencyAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Gain (Loss), Investment and Derivative, Operating, and Foreign Currency Transaction, before Tax [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MarketApproachValuationTechniqueMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Valuation, Market Approach [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MarketApproachValuationTechniqueMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Market Multiple</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="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_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_EquityMethodInvestmentOwnershipPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of investments ownership</link:label>
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    <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_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_EstimatedGrossUnrealizedGainsOnTaxCostInvestment_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Estimated gross unrealized gains on tax cost investment.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_EstimatedGrossUnrealizedGainsOnTaxCostInvestment_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Estimated Gross Unrealized Gains on Tax Cost Investment</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_EstimatedGrossUnrealizedGainsOnTaxCostInvestment_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Estimated gross unrealized gains on tax cost investment</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_AdjustedTermSimpleSecuredOvernightFinancingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/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="us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Changes in Fair Value of Investments Using Level 3 Inputs</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_VariableRateDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Variable Rate [Domain]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_VariableRateDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Variable Rate</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_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="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_LineOfCreditFacilityExpirationDate1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Line of Credit Facility, Expiration Date</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCreditFacilityExpirationDate1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Line of credit facility, expiration date</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PledgedStatusDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Pledged Status [Domain]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PledgedStatusDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Pledged Status</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_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_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="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="ck0001925309_ManagementFeesGrossOfWaivers_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Management fees gross of waivers.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ManagementFeesGrossOfWaivers_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Management Fees Gross of Waivers</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ManagementFeesGrossOfWaivers_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Management fees gross of waivers</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="country_DE_lbl" xlink:role="http://www.xbrl.org/2003/role/label">GERMANY</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="country_DE_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Germany</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_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="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="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="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_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="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_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="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="us-gaap_InvestmentTypeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment Type [Axis]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentTypeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Investment Type</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="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_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="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_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_AutomotiveSectorMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Automotive</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AutomotiveSectorMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Automotive Sector [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentAcquisitionDate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Initial Acquisition Date</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentAcquisitionDate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment, Acquisition Date</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Earnings Per Share [Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Earnings Per Share</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="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="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_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_EquityAndOtherInvestments_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Equity and other investments</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_EquityAndOtherInvestments_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Equity And Other Investments</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_EquityAndOtherInvestments_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Equity and other investments.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ErlingLuxBidcoSarlMember_lbl" xlink:role="http://www.xbrl.org/2003/role/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="us-gaap_IncomeApproachValuationTechniqueMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Valuation, Income Approach [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeApproachValuationTechniqueMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Income Approach</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_DividendDeclaredThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Dividend Declared on September 29, 2023</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_DividendDeclaredThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Dividend Declared Three [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_DividendDeclaredThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Dividend Declared Three</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RestrictedCash_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Restricted Cash, Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RestrictedCash_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Restricted Cash</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RestrictedCash_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Restricted cash</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_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="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="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_LineOfCreditFacilityCommitmentFeePercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of commitment fee</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCreditFacilityCommitmentFeePercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Line of Credit Facility, Commitment Fee Percentage</link:label>
    <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="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="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="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_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="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_ProfitLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net Income (Loss), Including Portion Attributable to Noncontrolling Interest, Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProfitLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Net Income (Loss), Including Portion Attributable to Noncontrolling Interest</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProfitLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Increase (Decrease) in net assets resulting from operations</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="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_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, Level 2 [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/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_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Class of Financing Receivable [Axis]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Class of Financing Receivable</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="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="us-gaap_DebtInstrumentCarryingAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Principal amount of debt</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentCarryingAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Long-Term Debt, Gross</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentCarryingAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Outstanding Principal</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_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_TreasuryStockValueAcquiredCostMethod_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Treasury Stock, Value, Acquired, Cost Method</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TreasuryStockValueAcquiredCostMethod_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Purchases of treasury stock</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Class of Financing Receivable [Domain]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Class of Financing Receivable</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_Security12bTitle_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Title of 12(b) Security</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ManagementFeeExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Management Fee Expense</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ManagementFeeExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Management fees</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EquitySecuritiesIndustryMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Industry Sector [Domain]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EquitySecuritiesIndustryMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Industry Sector</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_DeferredOrganizationCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Deferred organization costs.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_DeferredOrganizationCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Deferred Organization Costs</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_DeferredOrganizationCosts_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Deferred organization costs</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_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_InvestmentTypeCategorizationMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investments [Domain]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentTypeCategorizationMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Investments</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SummaryOfSharesNewlyIssuedToShareholdersWhoHaveNotOptedOutOfDividendReinvestmentPlanTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Shares Newly Issued to Shareholders Who Have Not Opted Out of Dividend Reinvestment Plan</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SummaryOfSharesNewlyIssuedToShareholdersWhoHaveNotOptedOutOfDividendReinvestmentPlanTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Summary of Shares Newly Issued to Shareholders Who Have Not Opted Out of Dividend Reinvestment Plan [Table Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SummaryOfSharesNewlyIssuedToShareholdersWhoHaveNotOptedOutOfDividendReinvestmentPlanTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Summary of shares newly issued to shareholders who have not opted out of dividend reinvestment plan.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ArrowbuyerIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Arrow Buyer, Inc.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ArrowbuyerIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">ArrowBuyer, Inc. Member</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ArrowbuyerIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Arrow buyer, inc. [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 Debt Issuance Costs</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AmortizationOfFinancingCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Amortization of deferred financing costs</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="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="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_OtherIncomeForTaxPurposesNotBook_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Other income for tax purposes, not book.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_OtherIncomeForTaxPurposesNotBook_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Income For Tax Purposes, Not Book</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_OtherIncomeForTaxPurposesNotBook_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other income (loss) for tax purposes, not book</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="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="ck0001925309_OtherExpensesNotCurrentlyDeductible_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Other expenses not currently deductible.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_OtherExpensesNotCurrentlyDeductible_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Expenses Not Currently Deductible</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_OtherExpensesNotCurrentlyDeductible_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other expenses not currently deductible</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_NonRecurringAlternativeTransactionFee_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Non recurring alternative transaction fee</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_NonRecurringAlternativeTransactionFee_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Non Recurring Alternative Transaction Fee</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_NonRecurringAlternativeTransactionFee_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Non recurring alternative transaction fee.</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="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="us-gaap_InterestExpenseDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Expense, Debt</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestExpenseDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest expense</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestExpenseDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total Interest Expense</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_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="us-gaap_UnfundedLoanCommitmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Unfunded Loan Commitment [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UnfundedLoanCommitmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Unfunded Loan Commitments</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_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="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_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="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="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_MidwestMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Midwest.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_MidwestMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Midwest [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_MidwestMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">United States - Midwest</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IncreaseDecreaseInInterestReceivablePaidInKind_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Increase decrease in interest receivable paid-in-kind.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IncreaseDecreaseInInterestReceivablePaidInKind_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Increase Decrease In Interest Receivable Paid In Kind</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_IncreaseDecreaseInInterestReceivablePaidInKind_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest receivable paid-in-kind</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentIdentifierAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment, Identifier [Axis]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InterestRateSwapNineMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Interest rate swap nine.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InterestRateSwapNineMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Rate Swap Nine [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InterestRateSwapNineMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest Rate Swap Nine</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_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="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_GTreasurySSLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">G Treasury SS, LLC.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_GTreasurySSLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">G Treasury S S L L C [Member]</link:label>
    <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>
    <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="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="ck0001925309_TotalReturnBasedOnNetAssetValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Total return based on net asset value</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_TotalReturnBasedOnNetAssetValue_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Total Return Based On Net Asset Value.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_TotalReturnBasedOnNetAssetValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Total Return Based On Net Asset Value</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CostApproachValuationTechniqueMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Valuation, Cost Approach [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CostApproachValuationTechniqueMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cost</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_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="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="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_PrepaidExpenseAndOtherAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Prepaid Expense and Other Assets</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PrepaidExpenseAndOtherAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Prepaid expenses and other assets</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_OrganizationAndOfferingExpensesPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Organization and Offering Expenses</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_OrganizationAndOfferingExpensesPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Organization and Offering Expenses [Policy Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_OrganizationAndOfferingExpensesPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Organization and offering expenses.</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="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="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="us-gaap_NetCashProvidedByUsedInFinancingActivities_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net Cash Provided by (Used in) Financing Activities</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="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_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_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_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>
    <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_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="ck0001925309_InvestmentCompanyNetCommonShareIssuancePerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net Common Share Issuance</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InvestmentCompanyNetCommonShareIssuancePerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment Company Net Common Share Issuance Per Share</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_InvestmentCompanyNetCommonShareIssuancePerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Investment company net common share issuance per share.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ManagementFeesWaived_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Management fees waived (Note 3)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ManagementFeesWaived_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Management Fees Waived</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ManagementFeesWaived_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Management fees waived.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_ManagementFeesWaived_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Management fees waived (Note 3)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsForHedgeInvestingActivities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Payments for Hedge, Investing Activities</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsForHedgeInvestingActivities_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Paid</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_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_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>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Liabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Liabilities</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Liabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total Liabilities</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_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="ck0001925309_LaramieEnergyLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Laramie Energy LLC.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_LaramieEnergyLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Laramie Energy L L C [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_LaramieEnergyLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Laramie Energy, LLC</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="us-gaap_StockholdersEquity_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Equity, Attributable to Parent</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockholdersEquity_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Ending balance</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockholdersEquity_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Beginning balance</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockholdersEquity_lbl" xlink:role="http://www.xbrl.org/2003/role/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_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="ck0001925309_DyeDurhamCorpMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Dye &amp; Durham Corp.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_DyeDurhamCorpMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Dye Durham Corp [Member]</link:label>
    <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_DividendPayableDateToBePaidDayMonthAndYear_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Dividends Payable, Date to be Paid</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_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="ck0001925309_SlBuyerCorpMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">SL Buyer Corp.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SlBuyerCorpMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">SL Buyer Corp [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_SlBuyerCorpMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">SL Buyer Corp.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="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_CoupaHoldingsLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Coupa Holdings LLC.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_CoupaHoldingsLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Coupa Holdings L L C [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_CoupaHoldingsLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Coupa Holdings, LLC</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetIncomeLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Increase (decrease) in net assets resulting from operations</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetIncomeLoss_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Increase (decrease) in net assets resulting from operations</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetIncomeLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Increase (Decrease) in Net Assets Resulting from Operations</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetIncomeLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Net Income (Loss)</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="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="us-gaap_InterestExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Interest Expense, Total</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/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_DebtAndEquitySecuritiesUnrealizedGainLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net Unrealized Gain (Loss)</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="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/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_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="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="us-gaap_ScheduleOfDerivativeInstrumentsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Derivative Instruments [Table Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfDerivativeInstrumentsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Amounts Paid and Received on Interest Rate Swap Transactions, Excluding Upfront Fees</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MeasurementInputComparabilityAdjustmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Measurement Input, Comparability Adjustment [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MeasurementInputComparabilityAdjustmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Comparable Multiple</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_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="ck0001925309_DividendsPayableDateOfSharesIssuedDayMonthAndYear_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Dividends payable date of shares issued day month and year.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_DividendsPayableDateOfSharesIssuedDayMonthAndYear_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Dividends Payable Date Of Shares Issued Day Month And Year</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_DividendsPayableDateOfSharesIssuedDayMonthAndYear_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Dividends date shares issued</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="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="ck0001925309_WranglerTopcoLlcMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Wrangler TopCo, LLC</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_WranglerTopcoLlcMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Wrangler TopCo, LLC [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_WranglerTopcoLlcMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Wrangler TopCo, LLC.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_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 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/totalLabel">Denominator for diluted weighted average shares</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CreditFacilityAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Credit Facility [Axis]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CreditFacilityAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Credit Facility</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_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="ck0001925309_HirevueIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Hirevue, Inc.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_HirevueIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Hirevue, Inc [Member]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_HirevueIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Hirevue, inc member.</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentCompanyExpenseRatioAfterIncentiveAllocation_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Ratio of net expenses to average net assets</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentCompanyExpenseRatioAfterIncentiveAllocation_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment Company, Expense Ratio after Incentive Allocation</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="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, Net Assets, Percentage</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentOwnedPercentOfNetAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of Net Assets</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Debt Securities, Available-for-Sale, Amortized Cost, Total</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale, Amortized Cost</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Amortized Cost</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UseOfEstimates_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Use of Estimates, Policy [Policy Text Block]</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UseOfEstimates_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Use of Estimates</link:label>
    <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ck0001925309_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>
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