Question does stall convertor rpm happen between shifts ?

With my setup and shift point of 6200 this is what rpm I roughly see:

View attachment 1716043545

I run a 3500 Tight so the converter is not a factor.

But I had a 4000 hard hit FTI that was actually looser with my stroker and my rpm dropped to about 4500 or so at each shift. Lots of slip each shift
you must have 4.10s mine was 3.23s