There's a lot of wasted time and groping around for a direction and new songs.
While it's clear there was a lack of motivation, I found the collaborative process of their songwriting depicted in the first two segments absolutely fascinating, and it showed that, even though the band was on its last legs for numerous reasons, the professionalism of their craft itself was not. The group dynamic was not destined to survive the transition from the natural leadership of Lennon, based on raw talent, to the attempted leadership by McCartney, through sheer hard work and perfection of craft.