On the other hand Will Scarlet says he remembers playing on the Uncle John on the tape at the Hell's Angels Benefit, and remembers that the benefit was definitely not at Fillmore East. So according to Scarlet the Uncle John on the tape is not Fillmore East.
The review reproduced with the notes of Dick's Picks 30 also places the Angels benefit at the Anderson Theater. Could our "11/23/70" SBD represent excerpts from two shows, perhaps this date at Anderson Theater & 11/16/70 at Fillmore East?