year with upsets in all 5 of the autonomy 5 conference championship games, then it would be harder to get in as being just one of 2 wild card teams.
For example, suppose this year that VA upset Clemson, Wisconsin upset Ohio State, and Georgia beat LSU in the conference championship games. Notre Dame would have to be undefeated to be in one of the 2 wild card spots over 1-loss Clemson, Ohio St. and LSU.