Doubt, (for me) of where the actual dismemberment site was given the complete lack of Dna at NMS home.
Soo many unanswered questions where the pros had an opportunity to elaborate but failed to do so.
Grrr
If the prosecution don't know, they are not going to ask. It's a basic rule of prosecution - don't ask a question if you don't already know the answer.
It seems to be accepted that it took place in the bathroom though. I think it's highly unlikely that it was elsewhere.