Life on the small screen

I was originally interested in the two sat inside the shop;-I thought the guy had an unusually shaved head. I was aware of the man with the umbrella off to the left, but he wasn't originally in my first shot. Between shots and a combination of both of us moving he had come into the frame Of course that is the major downfall of screens on today's cameras. It becomes hard to really assimilate the whole scene . You can frame the shot but I find it hard to absorb the detail when in a rush.
I suggest by that look that he had clocked what I was doing although he didn't say anything. Then again it was not until later when I reviewed the shot that I noticed him and that gaze.