Right about here[1] the hand motions of both characters have the same misapplied smoothing. Ignore the clipping through the table, watch the character tap the side of his head, it's got the same weird slow-down before touching the temple. Same for most of the other motions, they don't accelerate correctly.
[1] https://youtu.be/tEed88squbc?si=9IAjNHxWjQ44KoPT&t=350