...whatever Mister Caldwell is dealing with it certainly seems to be
kept far away from public knowledge.
That would tend to infer "more serious" than less IMO.
There are numerous reports/stories of how the NFL takes a toll
on coaches -- and we all know high levels of stress are "toxic."
From a selfish standpoint his absence is a big loss for the team.
That said, we can only hope he defeats whatever the battle is
and returns to Miami.
His wisdom, insights, and proven knowledge would certainly benefit
Flores & Company.
Hope you're getting better every day...
BNF