If I think you're fluent, I might think you're an idiot when really you just don't understand.
If I know they struggle with English, I can simplify my vocabulary, speak slower/enunciate, and check in occasionally to make sure I'm communicating in a way they can follow.
If I know they struggle with English, I can simplify my vocabulary, speak slower/enunciate, and check in occasionally to make sure I'm communicating in a way they can follow.