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,…
Yes. Especially true when it happens between an American and a Brit.
Also true between Germans and Brits, when the Germans are so good with their English, the precision with their wordings which tends to trigger some Brits.