This Writing Game

Leonard Cohen once asked Bob Dylan “How long does it take to write a song, Bobby?” To which Dylan replied “You tell me first.” “It takes three years”, said Leonard. “Three minutes,” Dylan told Cohen. “You see, I’m a three-minute guy.” That exchange is said to have taken place around 1967.
What are we to make of it, apart from the fact that at least one of them was probably exaggerating?
Cohen always thought of himself as a poet (and novelist) first and foremost. He only turned to music when his novels didn't sell and poetry couldn't pay the bills. ...