Why do these 3 experiences matter? Howard, Jimmy, and Dennis never checked these boxes. Randy Shannon did.
they don't.
it means less than zero.
(along with the success of you playing career).
what do belichick, shula, walsh, lombardi, JJ, howard, saban, all have in common??
they were of no significance as players. the idea you need to be a former NFL or cane great to be a great coach is ludicrous, but it's a popular belief on the internet.