I have no idea and I don't know if it has to be one or the other. A bigger question to me is, how much of that offense is Andy Reid. But the KC offense is great and not just because of Mahomes. There are constantly receivers open it has a great flow and you rarely scratch your head about the playcalling. The question just is: is Bienemy just great at installing Reids gameplan and manage the offense, or is he a leader, that can develope his own gamplan and lead his coordinators and motivate his team?
But then again this question arises with every coordinator without HC-experience. The question is: is this a risk this team should be willing to take? Or should we hire a guy like Norv Turner (random ex HC). Personally I like to take a chance of a high upside well respected coordinator - I just hope that the people, that decide if a person is fit for the job, actually know what they are doing.