The fight was pretty impressive IMO. Connor did get tired but some of the later rounds were pretty close. Mayweather had better stamina since he's an expert so he lasted better in the later rounds. Overall the match was entertaining.
No the fight was not impressive at all. It went exactly per script for mayweather, Conor punched himself out doing no damage in early rounds and had nothing left in the tank to do anything from the 5th round onward and no none of the rounds after the 5th were close at all. Conor threw way too many nothing punches and lacked endurance.