There's no fast part in Let It Be. The tempo is the same all throughout.
Otoh, compare the riff of Doin' All Right with the one in The End:
Doin' All Right---> E B D A
The End ----------> A D B E
Although functionally different, the chords used are the same, only in inverted order.
What's even stranger is that Paul had probably listened to Doin' All Right at the time he wrote The End, since Smile sent their tapes to Apple.
John hated HS. Fred's fave singer was not PR. Roger didn't compose 'Innuendo.' Witness testimonies are often inaccurate. Scotland's not in England. 'Bo Rhap' hasn't got 180 voices.