I have not found any evidence that it was captured, so far. I think I need to find the regimental history on both of these regiments. Hopefully they have it at the Loc.
Did you ever get a "feel" for the Union flags captured at Chickamauga? I think this is the Pickett's charge and Franklin reversed. I'm already in the 40-50 range on Union flags captured.
I will continue to search,