OK, I have a question...
What the hell is an AD or CD doing looking over your shoulder in the first place! YOU'RE the photographer...what do they hope to achieve other than pure intimidation?
I don't remember the last time I shot WITHOUT an art director breathing down my neck. I live and work in NYC, and that is how it's done for the most part - in fashion anyway. The fact is that this is a collaboration, and I'd rather that the A.D. know exactly what I am doing so that there are no surprises after the fact. We want to make sure we hit the target, not miss it. Like having the client sign a polaroid back in the day.
This is not an issue of trust, but of the complexity of a shoot. (Your web site doesn't seem to have any pictures on it so I can;t tell what you do, but I shoot fashion where there are many, many variables. You can not just plan the shoot in advance and expect you are going to know exactly what the outcome will look like...) You need look at the monitor and make adjustments as you go...and that includes the art director, client, stylist, etc.