Randy Hedberg, Lennon's qb coach at SIU, was an NFL quarterback too. His records at Minot and St Cloud were not great. Just being an NFL qb does not guarantee success as a head coach. Even Bart Starr, who was a legendary qb with 5 NFL championships to his credit, was a less than successful coach. Don't mean to say that qb's can't be good coaches, just that being a quarterback doesn't guarantee success.
Still very curious about who will be applying in the next 43 or so hours, but have to think the Pflugrad is the strongest of those whose names we know.