The only time you see the Rickenbacker in this video, George is seen in the background wearing a white shirt with the collar open and a bowtie around his neck. At the beginning you see George wearing the same clothes, and Paul is seen wearing a yellow shirt with a tan sweater vest. This is tantalizing because throughout the second half of the video, Paul is shown singing in that outfit, but only from shoulders up. His bass is almost never shown.
There is one short segment near the end where you see Billy Preston, Paul and Ringo (L to R) playing, and Paul is wearing the yellow shirt and tan vest, but you can't clearly make out the bass. Looks more like the Hofner than a stripped Rickenbacker though.
Incidentally, Ringo was wearing the open necked black shirt that day, and John is wearing all white. Much of the footage shown is them working on Get Back (Ringo is clearly playing Get Back most of the time) although filmed on different days and in different locations.
Since the Beatles seem to have never worn the exact same clothes twice, I wonder if you could tie the photograph to a certain day (I know I've seen pics of Paul in those clothes before) which would in turn could some yield session information about what they were working on.
...anyone?
