If you don't mind me asking, where does that understanding of yours come from?
I am asking because my understanding was exactly the opposite.
My understanding comes from the early trials.
"World Rugby continues to be open to innovations or technology that have the potential to assist officiating, enhance game flow and advance welfare in line with the key outcomes of the recent
Shape of the Game conferences.
The Television Match Official (TMO) Bunker is a concept that reflects that mission, having the potential to reduce lengthy stoppages and promote accurate decision-making for
foul play, as evidenced in the current Super Rugby Pacific trial."
The official site of World Rugby the governing body of Rugby Union with news, tournaments, fixtures, results, world rugby rankings, statistics, video, the Laws of the game, governance and contacts.
www.world.rugby
I mean, have you ever seen a referral to the bunker for a scrum? Every one i can remember involved potential foul play. Every single one.