well, he was an obnoxious git.
I have had to listen to people like this before and it becomes taxing on your psyche. Not sure what they think they'll gain from it and some of them don't even realize that they are alienating themselves by doing it.
There are some situations where you might need to take front seat but there's no reason to hog it just for the sake of hearing your own voice. I hope you won't have to endure being around said obnoxious git again anytime soon.
There's a way to communicate in groups like this and not come across like the git mentioned above although, I always work towards promoting others to talk more as I learn things and it's better for relationship building. Of course, sometimes one needs to do the talking, but by applying a balance to it, one has a better chance at opening relationships, not closing them.
Social etiquette is changing and not for the better unfortunately. I think that some people just don't have the respect for others to let the dialogue flow the way it should. I'm a socially awkward individual generally, I think having to tolerate that for an entire group gathering would be tedious.
The art of communication is dying, in my opinion. Still, there's still some who know how to do it well, and that certainly doesn't mean talking all the time.