You are comparing his chemistry to a receiver like Hartline, with the league's elite burner in Wallace...come on, Wallace progresses MUCH further down field consistently than Hartline, and this is where Tannehill has fallen short...on the big 40 + yard throws. You do not see him attempting bombs like that to Hartline, because it is a rarity that he gets that far down field...that is why his completion percentage is much better with Hartline, the throws are simply more of the intermediate type. However, Hartline is a master on the sidelines and picking up 1st downs, but to compare Tannehill's chemistry to two completely different receivers is far off base.