The video screencaps were literal frame by frame differences. There is no way in hell that Dream would have been able to, in the matter of HALF a frame, press 2, and 3.
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Here's my recording going frame by frame up until the splice, going back and forth, and then forward on. The hesitation makes no sense. if you're gonna make such a mistake in half a frame (which you can't) then why stop midway as if you're confused? Dream has definitely been a bad actor in the sense of he can't act, so it's kind of obvious this was him trying to be like "whoa whut"