TCC Need to export all collaborators of requisition in one single line

Summary:

I have a TCC script that exports requisitions details.
However, I want to add the collaborators to my export without duplicating the lines (so I want 1 line per req)

Content (please ensure you mask any confidential information)

My issue is that I have an exisiting functional TCC export (export mode = CSV-Report) that has many projections and subqueries.
Without modifying the export mode, I need to add a column that will retrieve all the collaborators on a requisition in the same line.
It's either I concatenate all the collaborators in one column or I add as many columns as there are collaborators.