Yes - it can be very difficult to understand different dialects of the same general languageI imagine it is like that all over the world in divers cultures
different dialects in America are interesting
it is easy to recognize someone from New Jersey or New York by their dialect
same with country folks in Georgia and Alabama , some accents are thicker than others and difficult to understand
like some Cajuns from Louisiana….i once was a mason tender for 3 bricklayers from Louisiana , a grandfather , son , and grandson
when the grampa told me something , most of the time I had to ask the grandson to please interpret for me……
- reminds me of when I first arrived in Idaho USA with a broad cockney (London) accent -at 17 years old - hardly anyone could understand me - if I spoke in the way I had learned whilst growing up in England - using all sorts of colloquial London expressions and words - so for communication purposes - it wasn't long before I had to start using local words and sayings - while taking the rough edge off my English English - and having to speak more in American English -
Of course when I returned to England 5 years later - all my mates accused me of 'Going all Yank' - since by then I had what you might call a trans-atlantic accent -