There is another aspect beyond raw vocabulary and grammar, and that's unspoken cultural assumptions :not abbreviations and slang, but real misunderstandings caused by different understandings of what seems to be a set of perfectly obvious sentences to both sides . A branch of my company went through a merger with another branch in a different country, and with a different language. Needless to say, it was difficult,…
Meeting in person and regularly is extremely underrated. This can happen also within a single culture. When two companies do some business together but instead of meeting often and talking directly (or zoom), spend weeks to carefully craft emails and never talk face to face.
There are so many evil politicians who order to murder people or made the laws which restrict human rights. But if you meet them in person, you will definitely feel they are nice person.