If nothing else Conor has shown to be about the smartest MMA fighter I have ever watched. He studies the fight game instead of just his oponent. He understands the importance of timing, body punches, head movement. It's scary that mma has so many supposed boxing trainers yet so few mma fighters understand the sweet science. Frankie has an old school boxing trainer in Mark Henry. Frankie understands these things. But Conor has mastered all the elements of the fight game. He is composed, uses his reach, uses kicks to throw you off your offense. He is difficult.
Frankie has has takedowns to threaten him with and good enough boxing to hang with him standing up and possibly outlanding him. But I think it would come down to whether Frankie can take Conor down when he needs to. Frankie is not one to force it. He follows the gamepla gamepla gamepla other. It would be a chess match that I would enjoy.