Comment: I watched it once,

(See in situ)

I watched it once,

and as I recall, just after telling Leno that "he doesn't know enough about him", it was almost as if you [yes, you :D] popped into his head, and that's why he immediately followed with the qualification [making clear how he took the question] that Cruz had not been in office long enough for him(RP) to make a fair evaluation.