Maybe, but keep in mind, Appalachia alone had many different dialects and pronunciations, as does England x 20! In St Mary’s County in Md, some of the old retired watermen still have traces of a dialect that can be traced back to a specific section of London where the first settlers came from in the 1600’s. Regional dialects have been dying since cable/satellite tv, and even more rapidly w/ the internet. But not long ago, English dialects were much more vast than here in the US. The differences we see between Boston, Baltimore, Chicago, etc could be separated by sections of London alone! Same in Germany. The differences between Berlin and Munich are much bigger than the difference between Boston and San Antonio, and Berlin to Munich is only a 4 1/2 hr drive! Heck, they often use completely different words or don’t even spell some words the same.
Many years ago we used to play a club in NC whose owner/mgr was from England. He’d been in the US for close to 20 yrs and his accent sounded….Australian!!
I once told him that Australians must just be English rednecks. He said I wasn’t far from the truth.