The Beatles, being big fans of Bob Dylan, attended his concerts at the Ralbert in 1965 and 1966. The latter was marred (or enhanced) by a general fracas involving outraged members of the audience attempting to upstage El Zim, due to his adoption of this newfangled "electricity". The Beatles joined in too, apparently; on the side of Bob, obviously.
In particularly idle moments, I've infrequently wondered where they were sitting on this and other RAH evenings. I have no idea - but the Beatles' London mentions another occasion in 1965 when they watched proceedings at a Daily Mirror Golden Ball event from a private box, number 12. Being at the Albert for a Bootlegs show the other night, I couldn't resist getting a couple of photos, as seen above and below:
Might it be that this was their regular seat, and that the following photo of Zimmy on stage at the Ralb at one of the 1966 shows also captures the shadowy forms of the Fabs?

Almost certainly not. But many thanks to Andre of the Bootleg Beatles for a splendid time, and I'd recommend going along next time they are in your neck of the bottle.