Sunday....
I've got to think that the NFL would have a BIG (ha ha ) problem with that. I don't see a scenario where the NFL is okay with the NBC having competing programming against the FOX and CBS Sunday afternoon games. I think that's a non-starter for the NFL.
Sure, the Big 10, Notre Dame and NBC are powerful...but guess who's more powerful...the NFL. I'd be shocked if the NFL allowed NBC to compete with CBS and Fox Sunday afternoon games with a marquee Big 10 game.