Nah, it's just a very quick cross and header. Replay that 100 times and Cristante gets a free header. It's about momentum, you have to stop it at source. Where the header goes is random, more often than not it'd be over the bar.
First goal you can blame any defensive player but it's mostly Buffon. I know Benatia is the resident scapegoat and I don't like him but I thought he was generally fine especially first half. The big error was later on when Petagna rolled him. The other thing is that when play gets as broken up as it was towards the end of the game with Juve attacking then defenders get very exposed, it's nice and easy playing in a unit knocking the ball about or doubling up but I'd rather have Benatia playing in broken play than Bonucci, put it that way.
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It's obviously Buffon, unless suddenly Benatia was thrown the gloves just before the free-kick, I didn't notice. You know how it is...