Ah, psychology!
The idea of someone getting freaked out by a radically different time is nothing new, but the way you have done it works, with a practical joke gone radically wrong.
I think that you need subtitles across the bottom of the piece here, since it seems that the sound is muffled for certain lines. With the way that everything else works, it does make up for it a little, but the discussion at the front door was a little muffled. Perhaps have the one clock start the other laughing and they both laugh together and then calm down before Patriot returns?
The other think I'd suggest is that the pieces move while they're talking, instead of the speech indicator. That would make your piece work well.
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