Well, these are skills that one would want to have in taijiquan, and these are situations and methods in which to examine and learn them.

"In the last app clip, would it be fair to say that if, after practicing it, the two did it in a way where the attacker threw the fist and then withdrew it like a normal striker, with distance not present, and the technique worked, you'd be fine with it?"

Yes I would be fine with it of course. The result would be very different but certainly normal. If one were to allow the time for the opponent to retrieve his fist before the second one launches this particular application method will not be viable. If this is done very very fast, there must be no gap and there are other specific pieces that must be added that are not shown here. This is simply the 'laboratory' for positional and methodological learning.

In a real fight one may or may not ever stumble upon the particular opportunities presented in these videos, but if they did, it would be nice to have these abilities. If the action occurs such that what is presented here is not viable, there are other methods that become viable, not shown here. In terms of gloves, we don't do that. This is not sport. Thanks for watching.