I was reading an old (2017) interview with David Yaffe, about his then recent biograpy of Joni Mitchel. It includes this:
"'Joni was originally a Dylan detractor. She thought he was just a Woody Guthrie imitator. She didn’t see what the big deal was at first,' Yaffe said. But when she heard 'Positively 4th Street,' she changed her mind, he said. Hearing the song — especially the line 'You’ve got a lotta nerve to say you are my friend' — was exciting and represented a new world of possibilities for personal, intimate lyrics. 'When she heard that, she thought, ‘Oh my God, now we can write about anything,’' Yaffe said."
In this "Far Out" article (
https://faroutmagazine.co.uk/joni-mitchell-song-about-bob-dylan-talk-to-me/), Joni is quoted as saying, "We are like night and day, [Dylan] and I,” she said. “Bob is not authentic at all. He’s a plagiarist, and his name and voice are fake. Everything about Bob is a deception.”
The article says that Joni's great song "Talk to Me" is addressed to Bob. It contains lines like:
"You spend every sentence as if it was marked currency!
Come and spend some on me--
Shut me up and talk to me!"
(Then she literally squawks like a chicken.)
I always listened to that song with no particular person in mind. but it being Bob does kinda fit.
I haven't watched the Scorsese "Rolling Thunder Review" film yet. But the "Far Out" article includes this from it:
https://www.youtube.com/watch?v=zeaO5UZ5OcI&t=51s
Does the film offer footage with more insights into their attitudes toward each other?