ND dominated teams they should, and were 1-2 against those with more talent. Go figure.
ND isn't pulling former NFL HCs and CFB Power 5 head coaches like Bill O'Brian. Nobody else besides Saban is, not even Clemson/OSU. It's a coaching rehabilitation pipeline that can't be duplicated.
Tony Eliot was a former Clemson player who previously coached at the Football Powerhouse Extraordinaire Furman. Bad example on your part.
Kevin Wilson is probably your best example. Former Oklahoma OC who worked his way up with that team, was HC at Indiana, and then joined Ohio State after getting fired as Co-OC.
Let's see if he can pull in good recruits, but even that may not be that indicated of him vs. the state of the program. And coach them up. He had pretty excellent returns for a 1st year OC, and young coaches and coordinators are proving across the NFL that experience may be over-rated by owners and ADs.
*Chip Long had some high performing offenses but obviously caused a lot of bad blood.