[ZeroGravitas]

Any international business has training for these kind of cultural differences.

For example, when and if you refer to people by their first name or more formally with full titles for example. Whether working long into the night means you're dedicated or inefficient.

These are not right or wrong as such, they're just culture, but if you blunder into the situation assuming that everyone has the same culture, then someone bluntly telling you what's wrong with an idea can seem intentionally aggressive and rude, or someone trying to politely say no might seem vague, or worse, be taken as tacit agreement.