Weird play

[Steve M]

This is a dead ball, and very possibly interference by the batter.
The pitch was completed when it hit the catcher's glove, the batter has zero right to swing until the next pitch is thrown. It is not catcher obstruction - the batter did not swing until the pitch was completed.
I know we all have brain farts now & then, but I've got a very hard time imagining that any solid umpire would call this anything but possible interference (interference if a runner is on base and the catcher might be going to make a play on that runner).