I gave a coworker a blank stare for several long awkward moments before they went: You really have no idea what I'm talking about do you?

Why, yes. That's why I said I think you were talking to someone else when the conversation started.

They remember who they did talk to about the issue now and they're having a much better time understanding each other

Funny how that works.

He's a good guy who is very stressed at the moment (he's like the me of his department) so I'm more amused than annoyed at him

He's got a LOT on his plate and considering I get all the tricky stuff shoved at me I can see why he thought I was the one he has been emailing

That's absolutely fair!

But nope. Not me this time.

It was still a funny moment of ZZ, you remember this, right?

Nope - think you were talking to Sharon about that.

No, you know? The thing with the bits and things?

Nope. Still got Nada.

Not even about the supplier??

/blank stare

I think I may have been talking to someone else....