I have to totally disagree with you on this one. Dan was an excellent X's and O's guy, but he broke the game down to a simple, get rid of the b.s. complexity of the game and all the X and O's crap and it all really comes down to feeling the rush and watching the receivers and the CB's when reading the coverage.
It's easy to breakdown a play after the fact, but NFL defense's disguise their coverages so much, it's almost idiotic to really let the X and O's take precedent over what is unfolding before ones eyes. Marino had excellent footwork, great vision, extremely accurate, many players said Marino's passes were easy to catch (that says it all) and a great quick release, one of the fast as ever, and a fierce competitor, most fans can't even define what a quick release really is.
True story - It was once quoted - by coaches and players - during practice, Marino would tell the defense which side he was throwing to and they still couldn't stop him in practice. Marino was also quoted as saying a perfect pass could not be defended.
In short what Marino was saying to Bill Walsh, in a nice way, was look, cut the b.s. the game really comes down to playing and execution.
You can't coach great footwork, you can't coach accuracy, you can't coach great vision, you can't coach a quick release, you either have it or you don't.
In closing, I did not know Marino was at the Chicago game, which explains why Tannehill had an outstanding game.
I have always said, Marino would make a great offensive coordinator, where he can help Tannehill in is developing his footwork, trust what you see and let it rip. he can teach him how to feel the rush, he can teach him about the clock in his head, when its time to let the pass go, and I am sure a lot more than I know.
I recall Dan Marino telling Scott Mitchell where to throw the ball and who would be open and Marino was right everytime.
I also recall Steve Young taking about his early days in Tampa and the 49ers, and he said, he finally learned to throw the ball in the area the receiver was at (typically Jerry Rice) and I swear it, he said, sometimes he could not see him (because he was not a very tall QB) and the rush, or because of the defender , but he learned to trust the receiver and himself that the receiver and ball would be there, and a lot of times, he could not see the receiver making the catch, but the roar of the crowd told him it was a completion or a TD.