It's a vision, it's not supposed to make total and complete sense.
So why assume it all flows in a nice chronology then?
The Tempus he met in Tempus Anyone and Lois and Clarks, never dressed in this manner and didn't have a beard. I can't see him recognizing him as Tempus without seeing the person she saw in her vision for himself.
Well, from her description it makes sense he did not recognize him. In theory, if she decribed some other things about him, he might have recognized him, but even then it is hard to say. It is not like she really heard enough of Tempus's speech to convey it to Clark. Also, I guess she can't exactly tell him about the "Duh" factor without revealing she knows CK=SM, which she is not about to do, ever, at the rate she is going.
But he only wonders how Lois got there, not how he did.
She doesn't know that.
Well, it was what he asked. "How did you get hear".
