I know there's a lot more to talk about regarding this excellent show, but about that Weekapaug Groove:
Another Brick in the Wall? - Maybe it's not enough to be considered a tease because Mike used the same baseline (from 5:00 - 5:25ish) during the Gypsy Queen jam, but Mike brings it back and the rest of the band pick it up at about 6:23. It's obviously too fast, but it seems intentional.
I also hear a bit of (and I know that the song wouldn't exist for nearly another decade) Pebbles and Marbles starting at about 12:20, and especially at about 12:43. I bet if that sequence happened today, it could be considered a tease.