McKee: Heckling the performer is a long-standing tradition of stand-up comedy.
Finding the Disagreement
On this (unusual) question, there will be four points of disagreement. Let's do our usual process of asking, for each one of Person 1's explicit claims, whether Person 2 argued the opposite.
Did Chapman argue: heckling is not a long-standing tradition of stand-up comedy?
No, he agreed with that. They probably disagree about why it's a long-standing tradition (McKee seems to feel like it's embraced by the performers, whereas Chapman is saying it's only tolerated by the performers but they wish it weren't happening).
Did Chapman argue: performers are not aware that heckling is a tradition, or that performers do not learn to respond entertainingly.
There's no comment on whether performers are aware of the tradition. We could potentially say they disagree when it comes to the entertainment value of heckling.
McKee thinks that the crowd ends up enjoying the heckling, since the comedian is trained to respond entertainingly. Chapman thinks that heckling is usually only enjoyed by the heckler.
Did Chapman argue: it would be wise for comedy venues to prevent heckling?
Not explicitly, but he is saying that most of the time heckling is just a distraction, so he would be definitely headed in the direction of "let's prohibit it".
Goal
It's hard to predict four different disagreements, but we have at least a couple: - whether or not heckling is fun for everyone or just the heckler - whether clubs should try to stop it - whether performers enjoy it or just tolerate it