the medley is a patchwork of nothing songs they couldn’t complete over the prior two years
They spent so much studio time on it and hated the sight of each other the whole time
As a fan it was nice they got back together for old times sake and putout a good album for 1969, but it’s way below the standard of their peak years in RS/Revolver/Sgt Pepper/White Album.
Beatles couldn’t jam, they grew up on Chuck Berry riffs and country/western songs, which is solid in its own right and gave us a lot of great work, but they were hopelessly out of touch by 1969 in the rock world