Sadly in this game it did not occur, but it could have:
Castling Checkmate..
Live chess with subscribers
https://m.youtube.com/channel/UCDdxKb7sYliwi8RNMzkNzSw?view_as=subscriber
IM Eric Rosen delivered a checkmate via castle here: https://m.youtube.com/watch?v=UxZc7ZF2uOY&feature=youtu.be
Surprisingly the mate was given via the rook attacking the king vertically down the F-file
Does anyone know of any game played by famous players through which a checkmate has occured by castling? If yes, please post the game...
Thanks!