I went back to Spain recently for the first time in over 10 years.
I was chatting with my buddy Manuel, and he said something quickly that sounded like gobbly gook.
I had acclimated myself to the Latin American way of talking. There are differences.
That's one of the reasons I didn't understand Manuel in Spain.
And of course, what he was talking about--it didn't even exist 10 years ago!