I've worked with non-native English speakers before and I think some people underestimate how much jargon and dialect that native English speakers use on a dail

I've worked with non-native English speakers before and I think some people underestimate how much jargon and dialect that native English speakers use on a daily basis that people that live in non-English speaking countries don't get exposed to. For example saying: "how are you getting on?" seems to be a rarer expression than simply asking "how are you?" and is more difficult for non-native speakers to parse, of course they can learn specific British and American expressions, dialect and office jargon but it's another hurdle to communication.