Inspired by this chat message (text is below), I have sometimes wondered if there is a word for the feeling that a person you were talking to about a particular subject was using the same words as you, but was actually talking about something else, or was leading into a very different and seemingly unrelated subject. Typically, you feel like the person is crazy by this point.
Is there a single word for this? Is there a two- or three-word phrase, maybe?
The chat message:
There should be a word for that double-take sensation you get when you realize the conversation is further down the rabbit hole than you thought. Like when you are having what you think is a normal chat about interest rates, or something, and the other person mentions that we're all controlled by lizards from space.