If tey are "starting points", why refuse to continue a conversation: *no, I’m not trying to get into an argument*
So, having exhausted all reasonable "good" intentions at that point, I am forced to ask: "do you have a bad intention?". Point at which he could have calm things down by just saying: No, I don't, what I meant was ......., or, better: sorry: I didn't mean to disturb you, or even: No, pal I don't. He didn't either.