It is the expectation in my country to wait for your turn too, and seen as rude or a power display to speak over someone.

I also find that casual conversations are more turn based, and people are expected to continue a conversation by asking questions (of the other person). So this also means being mindful of how long you've spoken, and to ask a question about the other person instead, to not keep the other person just listening. The gauge is questions (or short responses), and the period is silence.

I find that questions pose less importance with US people, which might still use them, but not in the way we're used to. There i feel like the gauge is speaking (or short responses) and the period is silence.

Greetings like "how's it going" and "what's up" were confusing at first too, it took me a while to get when people were using them as greetings.