Learn English – “Talk to you then then”


I am talking to a friend on the phone and the conversation is somewhat incomplete but we decide to hang up. Before hanging up, he says "I'll see you tomorrow". Would it be grammatical to reply,

OK, talk to you then then!

The two thens are not a typo, in fact that's my whole question.

Best Answer

Sure, it’s perfectly fine, normal even. It means that you shall therefore speak with them at that time. “Therefore” and “at that time” are two different kinds of then.