Why?
I had to add a few things.
Sources: ULM vol. 1
Paul McCartney & John Lennon 1968 Full Interview
ULM vol 5: Never Apart pt1/2
ULM vol 5: Never Apart pt 2/2
Paul McCartney suffering from a bad stomach virus during Beatles Interview
I'm sorry but I really don't remember where I got the discussion about an old Winch :( It was somewhere on tumblr.
Thx @genderlessginger for reminding me of Paul defending John in this 1966 interview! <3