More About the Beatles' Get Back Sessions and Their Walk Through 1969

I've been continuing my slow watch of the Beatles' Get Back documentary on Disney Plus, a few sometimes painful minutes at a time.  It's still just a few days into the project in early January, 1969 at their London Twickenham Studios site.  It's been interesting hear Paul McCartney playing out fragments of songs that would later appear on the Abbey Road album (Golden Slumbers, Carry That Weight) and as a solo artist two years later after the Beatles breakup (Another Day).  George Harrison came into the studio with his own material as well...I Me Mine, The Inner Light and For You Blue were standouts.  But John Lennon didn't seem to have any new songs to throw into the mix besides Gimme Some Truth (his Across the Universe was a holdover from the '68 White Album sessions) and Paul openly confronted him on this...John often appeared disheveled and out of it.  At one session they sat around and speculated about the site of the project's closing concert, including a strange remote ancient stadium in northern Africa...only Paul seemed enthusiastic about even putting on a show. As for Ringo Starr, the Beatles' drummer, although rarely partaking in the band's musical creative process, he was consistently present and agreeable.  If you didn't know anything about the Beatles' history you might think from what's been shown so far that it was Paul and George leading the creative process with Ringo and John providing the support.  I know the outline of events that would transpire after this project in 1969...the Beatles would hire Allen Klein in February as their manager over the objection of Paul, who wanted his own soon-to-be own father-in-law for the job.  Paul and John would respectively marry Linda Eastman and Yoko Ono in March and at the same time George would be arrested for pot possession with his wife Patti.  The band recorded the Abbey Road album from February through August, it was released in September, and in the same month they signed a new long-term recording contract...soon after which John announced to the others his departure from the Beatles.  That fall the hoax that Paul McCartney was dead from a 1966 car accident and was replaced by an imposter took hold in the popular culture...Paul's isolation with Linda at their rural estate compounded the mystery.  The public at large would still believe that the Beatles were still together until McCartney's announcement with the release of his first solo album in the spring of 1970 that the band was finished. Ironically, a few weeks later the Let It Be album, based on the very Get Back sessions I've been watching, was released, boasting on its jacket that it was a "new phase" Beatles album.  Living through 1969 as a 12-13 year old, I just remember what a cool, kick-ass song Get Back was...