But I didn't see it !!!

[Chess Ref]

How do you blues handle catchers obstruction?

Pitch comes, batter squares to bunt, catcher stands up.

I hear ball/bat connection , then I hear another tick. I didn't see what the tick was, but I heard it.

Would it have been okay to call catchers obstruction without seeing it ?

For the record I no called it-but now I'm thinking I should have called it.