First of all, kudos to the video editing, every time I thought, "I want to see that again", it was slowed down and saw what I was looking for.
Does the action of B41 cause the progress to be thwarted and if so, the ball does not appear in B23's possession prior to that point.
A77 does turn the push into a pull after the LTG was acheived, and after driven back by B41.
If this was able to go to replay (for loose ball prior to progress ruling), I think stands would be the call.