Having a qb is the best way to success. Nagy didn't draft Trubisky, the gm did. Even so, they had some success until it was proven Trubisky wasn't any good. It had 0 to do with him not being under Ryan. We've seen it work and we've seen it not work. Whatever way you slice it, EB has been the oc in KC and they've had good offenses. Kafka, whom I don't have a problem, is all of a sudden getting credit for a mediocre Daniel Jones. There isn't a tree or recipe for success of a coach other than the qb. McDermott went to the playoffs before Allen, but since Allen's ascension, they have become a contender.