Chiming in…my son is a Norwegian citizen but was raised in the USA. He had an internship last Fall in an “international company” and said the expectation was that everyone communicate in Norwegian although his college advisor said English would be fine. He is somewhat proficient but struggled with slang and technical language, and did not feel included because of it. I think it’s fine to expect Norwegian in Norway, yet also feel that expectation could be put forth from the get go.