When has it happened where an owner or GM forced a coordinator on a head coaching hire, and it worked out?
Glenn will need an experienced OC methinks. If there is someone good in Detroit most likely he will get promoted with Ben gone. Plus most of good staff will go with Ben. Who will be the OC then? Pederson just got fired, won SB before, had a play-off year in Jax. Unlikely to get a 3d HC job. Maybe a perfect OC that will stay for a while if he succeeds?