MM or BB work pace

Do MM firms crank juniors harder? Given the volume aspect of the deal work at a Lincoln/Piper/HW/HL/Baird/Blair (I know some of those are LMM) does this force down longer hours on the juniors than a BB would?

On top of that, some MM firms might structure deal teams very lean as if they’re an EB.

I imagine the work at a BB is much more thoughtful in advisory as well, less process cookie cutter cut and run processes.