I love the guy.
Also to be noted, he did wonders with crap for an offensive line in Washington. No #2 WR. And really no real TE.
I also think there might be something here. Harbs does seem to be tapped into the league and listening into the good 'ol boys network in a meaningful way.
Not completely true. He had exactly the kind of line that the zone blocking running scheme needed (not a great pass protection scheme). He had a couple guys he could have gotten a lot more out of, but there were a lot of factors there. He had a STUD TE for a while this season, and he's had Davis, who is a good TE (don't pay much attention to the numbers the last year or so when he fell out of favor).
Kyle is a good OC if he can use HIS system with the types of players HE needs. This hybrid thing they were running in DC was great for a running game, and short, mobile passing, but TERRIBLE for the big plays and deep ball, which is Kyle's bread and butter. BAL might have better personnel for his kind of scheme, can't be worse than the fit in WAS.