I was always told it’s a bit rude to use a language that not everyone present understands, since you’re basically excluding people from the conversation. Your example seems a bit silly though.

Talking to a person excludes all others by default. If I’m talking to you I’m not talking to the guy behind me. What does the guy behind me care what language we’re using? And why should I care about the one I’m NOT talking to.

Hallway chat is the reason people come to the office.

It’s impossible to take part if people use a language you don’t know.

I thought people came to work because they needed the money, lol. And, yes, it’s impossible, and perhaps they don’t wanna include me in the conversation… am I supposed to force them?

Yes. It’s polite to communicate in a way others can participate

If you don’t want to do it, don’t hire people who don’t speak the company language

'How dare you not letting me police and force myself on your conversations? How inconsiderate of you ’

Spotted the American.