Ideal scenario would be for Andy to beat Novak for AO, then square off in RG final. Imagine the hype of both going for career slam, it would be funny if Andy were to beat Novak to a career slam, that would destroy Novak mentally for some time.
If Nole plays like he did today and Andy plays like he did yesterday I see Andy holding the trophy on Sunday. But of course in both cases it's a big 'if'. We all know about how both players' form can fluctuate. I've not watched Nole's earlier matches but he certainly didn't impress today whereas Andy played with authority and purpose.
In matches always something can happen that is bothering the other player. Or can bothering...On purpose or not. Something in the stadium, a wrong call, a racket behind the net, or The Bird congratulating himself with his first set....
So you have to ingnore such things, wondering why the opponent needs this kind of behaviour (if on purpose) and turn it around. And that's what Murray did. well done!