You make the call

I want to become a film director. In order to have a career that means something I study the people who have preceded me. While recently working on the set of a major commercial I was able to work closely with the 1st & 2nd AD, the DP, and the AC. I was able to study movements and the way the these individuals communicated with one another and other crew members. What really captured my attention was how little communication there was between the director and certain members of the "crew". The communication amongst "crew" members (the crew includes: 1st AD, 2nd AD, DP, and AC) was different from all the other sets I'd been on. The director only spoke to the 1st AD, the DP only spoke with the AC and so fourth and so on. At times it made for awkward situations but overall an exciting experience. As an individual who is pursuing a career as a director (not to mention owning a BS in Mass Comm) I would think it's imperative that the director develop a great repore with crew members. Maybe it's a situation I'm that I'm over analyzing, it could be that these individuals know each other very well and that's just how they communicate with one another. What I do know is I've been apart of other productions and the communication flowed freely. On this previous one at times it seemed a bit strained. It's the director's job to bring an idea to life, but it's the other "crew" members job to subliminally enter the director's mind and to make sure she/he is relaying their thoughts correctly. Which leads me to ask who is the real director?