Right on! Maybe your affableness helped him let his guard/preemptive attack down and more open to a common ground chat. Some people when they meet are like strange cats, they circle each other trying to get into an advantageous position just in case the other cat attacks. That can go on for quite a while until they are able to form a judgment on the other person to work with.

Anyway, glad to hear, and gl on further encounters of the kind!