If you watched the Petzing presser he said he's pleased with where Marv is but "he needs to clean some things up." Now Petzing says clean things up like most people use the word "the" so not a big thing but if you watch the whole thing he says it on Marv several times. At one point someone asks him about the analysis(from people like Kimes) that alot of the plays to Marv are low percentage or 50/50 balls and does he have a comment on it and he said no.
I've watched 3 of them now with Petzing I think it's obvious that he thinks the issues between Kyler and marv, are largely on Marv, and that there's communication and just being in the right place issues that they're working on during the week. Week after week he says Kyler is doing a good job of keeping even keel, which is a polite way of saying he's not blowing up at all the drops, bad routes and other things he's seeing.
Petzing was asked if the Wr group is performing as they expected and he without batting an eye says yes, if that's true the entire staff should be fired for knowing the Wr room was this mediocre and not doing anything to upgrade it.