BIGGER QUESTION
Maybe the Flower doesn't want a big personality to lead this defense. Maybe the guys he's considering are guys he's friends with (Staley) or guys who are considered risers, but not that qualified on paper.
It takes a confident coach to hire somebody whose overqualified, maybe just as qualified on defense as Matty is on Offense.
Holmgen never seemed afraid of that.
Not many coaching trees seems to be branching off any GB Head Coach since Holmgren