Set I is really cohesive and high energy - even Back On The Train, which I never expect to blow me away, is stellar - but in Set II they tapped the golden vein and extracted a motherlode from the mountain. Crosseyed>Theme should be covered in academia to teach improv communication, or at least to show what is possible when a band operates as a single unit to perfection. There is no "ok, I can hear Page steering us towards X" or "Mike sent this into Y here." Instead there is one voice / direction / statement. Nobody stands out on their own and everything stands out.
They could have ended with Theme and encored Rocky Top and that would have been one of the better nights in one of the better years. I can't wait to see them in Denver.