They were slotted for 3 hours; first set was well played and festival-friendly, though short (65mins); intermission was also very short (19mins), and they ended up going about 10mins past the alloted end time
The 2nd set to me felt like about 50% pure improv, which blew me away under any circumstances, but particularly in a general festival setting. Granted, it was the end of a long day at a hot festival, and the effects of hours of partying and that i wasn't taking notes certainly must be factored here. . .