The refs are present at Lambeau field.
assuming you were talking about the ND fumble recovery that clearly should have been called out of bounds, it’s the same issue: the refs were ACC refs and they have a vested interest in having ND be as strong as possible given how dependent ACC teams are on them for strength of schedule.
There is an obvious solution of course: there needs to be neutral non conference affiliated refs for all games but especially non conference ones. There’s no reason why the NCAA can’t organize/train/pay the refs and the conferences merely hire them for games from the NCAA. There is way too much at stake to have biased refs calling games when it is so important to conference to have their teams win OOC games or later in the season when there is a benefit to a certain team winning and making the playoff etc
