All bullshit aside, the thing (I think) to watch for this: Does Conor lose his cool.
If he does, like he did during the fight week press for the 1st fight, then he is likely to blow his load in there again, or do something sloppy. Conor usually wins his fights by being the calmer guy, it lets him seize the moments & land his shots. Against Nate, he found a guy who was just as calm in there as he was, on top of having a giant bag full of ninja tricks.
I'm sure Conor has done amazing work in this camp, preparing for a taller longer guy with a great chin this time; I'm sure Kavanagh's team working with Conor have made many huge technical adjustments. But if Conor is not in better control of his spirit this time around, then all of that might not matter & he may end up with the same result.
If he keeps his cool throughout & just has fun with it, then this could get interesting.