You mean the other angle where you literally see the back of Tom's head snap back from being punched in the face?
Do you know how many countless examples there are of fighters smiling and laughing after taking a good shot? It's the biggest tell in combat sports that someone got hurt by a shot.
As is immediately shooting a take down to avoid continuing standing after taking something you didn't like.
Both of which Tom did after Volkov dropped him.
In the span of 4 months Tom got caught in the same scenario by two different fighters and went down both times. In any other fighter you'd say that's a bit worrying and at LEAST is a defensive issue he needs to fix before someone puts him out clean there with a better shot.
Meanwhile people are saying his chin is granite for no reason. Even in YOUR bizarro scenario that neither shot "actually" hit him that doesn't prove he has a good chin. If he didn't get hit then YOU are the one who has no idea how his chin is and shouldn't be saying he has a good chin.