It is being reported that the new B1G time slots on NBC and CBS are exclusive to only the B1G going forward in 2023. If so, that means NBC cannot shift this prime time timeslot to earlier, which means an "independent" Notre Dame can never again after this season have a "prime time" home game on NBC, unless they join the B1G. It would violate their new B1G deal.
And CBS has another dilemma because they are now double booked in 2023 with both an SEC game and a B1G game at 3:30 eastern time. That is not possible as both games are contractually obligated.