Robin, that is EXACTLY what I was looking for! I tried it last night, and although it needs some tinkering, it gives me precisely the look I'm after.
I was concerned about the continuity issue because I too was thinking "moving the clips" instead of "overlapping the edges".

I'm trying to enhance the visual impact of the grimy scene to point out the contrast between it and an modern dental office and the continuity of the dentists hands moving through the procedure.
Thanks to everyone suggestions, I have the beginning of a much more powerful pice of video!
thank you all!

Glad to be of service!