It's possible, as someone used to high-involvement style, to converse in a way that's less hostile to the higher-considerateness speakers in the group. For example, if you start talking and notice that somebody has abruptly stopped talking, wrap your point up as quickly as possible and explicitly give them back the floor: "<name>, you were saying...?". On the other hand, if they keep talking with you until they wrap up, they're using a higher involvment style and you can keep going.