When Art first heard that Nicky owned a fed from Kentucky, he was on the case, and thought, maybe only hazily, that it could be Raylan. I think that when Art heard that a fed was there at the airport when Nicky was killed, that’s where Art thought THAT could have been Raylan, because Raylan was off duty and suspended at the time.
We’ve had a few cases where it was strongly hinted that Art knew more than Raylan was telling him, like when the money disappeared from the evidence room. In that case, Art said to Raylan, “You don’t want to tell me more.”
