Don't even need to invent anything. Just make it like rugby. Hear the discussion and reason for the decision. Simple. Oh, and sort out the sound quality. It was embarrassing.
Yep. If they don't want to do it the entire time at least they could do it during the VAR check. They could even have someone alert the on field ref that he is now on an open mic so he's not dropping f bombs to the players while on world wide television.