The Quality of a Discussion Often Depends on How Closely

The quality of a discussion often depends on how closely the parties attend to the same issue.For the passage below,determine whether the speakers are clearly disputing the same issue,or whether somebody is missing the point.
a:I think the oversight laws for police have to be toughened.Right now,it's difficult for society to protect itself against rogue cops.
b:Well,I know you can't be convinced otherwise,but it just isn't true that every officer who's brought up on charges is guilty of those charges.