I think I heard a similar retimed ADR line: when Luke says to Threepio, "Come on, let's go have a look," the pause before "Well, come on!" seems to be shorter.

Since Luke's back is to the camera when he says "Come on, let's go have a look," I'm assuming that it was the part that was retimed.

The pauses between the lines of the "move along" trooper are different in the mono mix. In the mono, his responses to Ben are immediate; in the stereo, there's a pause as, I suppose, the Force suggestion sinks in.