I worked at a software company in California with a QA team in China that did not get the idea of text messages being async. This is how a conversation would go:

Them, Monday 7PM my time: Hello
Me, Tuesday 9AM: Hello, did you have a question?
Them, Tuesday 7PM: Yes, it is ___
Me, Weds 9AM: The answer is ___

So they get the answer Weds evening my time, wasting a day by not just asking the question in the first text. Yes, we did tell them. No, it didn't take.