It’s almost like they’re rushing, on the edge of breaking out into chaos at any moment but somehow manage to hold it together. Awesome.
There’s also some rad stutter-like fills from Bonham where it feels almost like he’s dropping the beat or turning it around, but it just stays right in the groove. It’s around 3:10 and on.
I think the guitar solo starts out a little sloppy actually, but he pulls it together in the end and starts melting some faces.