re: Brick?

Brick and BDP share the job of coaching the DL, or so the Advocate stated during search. BDP did STs which wasn't successful. Has he ever called plays, as Co-DC. That is a hard job. So, what else does Brick coach?? BDP helped with game and time management on the sideline. Why is Brick considered The Chief's man? I keep reading that Chavis will take him with him to A&M. What is the connection?