My $.02 is the secondary has been entirely inconsistent. So sometimes it is great, and sometimes it's terrible, and depending on the week you ask him, he says whatever his last impression is.
And I have no idea if he's the right guy or not. I do think he's better than Hazlett, Joe Barry (who I think is STILL statistically the worst DC in the history of football who Jay Gruden somehow hired), Manusky and Jack Del Rio.
I would like to learn more about the DBs coach. I don't know much about him, he wasn't with Quinn/Whitt/Peters before that I can tell, so I don't know what the connection is, but I wonder if that might be a spot where what he's putting down is not being picked up.
The coordinator does not teach the position groups technique or communication. That's the position coach's job. The coordinator puts together the scheme, and tells the position coaches to teach the scheme. DBs communication has been a problem for both seasons this staff has been here (and long before that), so I wonder if it's not just Whitt, but also position coach related.