How to pass joined tables into static process delegate

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I have a working processing UI that I want to use to create individual PDFs (from a report) and save to disk.  At the end of the process I want to show the same report (all together) in preview with the same records used to create the individual PDFs.  I have a working report but am struggling with how to get the joined tables in my PXReportResultSet since my delegate only gets the main table passed in as List.

I’m sure I could BQL query these somehow or run a full BQL query again by passing in the filter (based on the referenced technique) but not sure if there is a better way to just grab these from the results already retrieved for the UI.

Here is my code:

        public APStaleDateLettersProcess()
        {
            DetailsView.SetSelected<APQuickCheck.selected>();
            DetailsView.SetProcessDelegate(Process);
        }

        public PXCancel<APStaleDatedCheckFilter> Cancel;
        public PXFilter<APStaleDatedCheckFilter> Filter;

        public PXFilteredProcessingJoin<APQuickCheck, APStaleDatedCheckFilter,
       InnerJoin<APContact, On<APContact.contactID, Equal<APQuickCheck.remitContactID>>,
       InnerJoin<APAddress, On<APAddress.addressID, Equal<APQuickCheck.remitAddressID>>>>,
       Where<APRegisterExt.usrStaleDatedOn, Between<Current<APStaleDatedCheckFilter.startDate>, Current<APStaleDatedCheckFilter.endDate>>,
           And<Where<APQuickCheck.released, Equal<True>,
           And<APQuickCheck.status, Equal<APDocStatus.closed>,
           And<Where<APQuickCheck.docType, Equal<APDocType.quickCheck>,
           And<APRegisterExt.usrStaleDated, Equal<True>>>>>>>>> DetailsView;


 public static void Process(List<APQuickCheck> payments)
        {
            // the result set to run the report on
            PXReportResultset quickChecks =
           new PXReportResultset(typeof(APQuickCheck), typeof(APContact), typeof(APAddress));

            foreach (APQuickCheck quickCheck in payments)
            {
                // create individual PDF files

                // just get each object individually using keys from quickCheck??
                // APContact contact = PXSelect<APContact, Where<APContact.contactID, Equal<quickCheck.remitContactID>>>.Select();

                // How to get data from joined tables when all I have is APQuickCheck??????
                PXResult<APQuickCheck, APContact, APAddress> result = new PXResult<APQuickCheck, APContact, APAddress>(quickCheck, new APContact(), new APAddress());
                quickChecks.Add(result);
            }
            if (quickChecks.GetRowCount() > 0)
            {
                throw new PXReportRequiredException(quickChecks, "AP670000", PXBaseRedirectException.WindowMode.NewWindow, "Stale Dated Letters");
            }
        }