IF that were to happen then the first thing to do would be to fire the AD that abdicated their responsibility.
Next, hiring a HC based on what O system they run is insane. Their are several other factors more important. One of the most important being D - where championships and programs are built.
Another big mistake most schools make is hiring someone because they, perhaps decades before, were associated with the school. Sadly we have done this at least 5 times.
And college football is, every year, dominated by the "latest & greatest." There is no way on earth to tell, even 2 years from now, who that person might be.