(Bavaria has a very strong dialect that is a sort of middle point between Hochdeutsch and Swiss German?) Dialects do fade over time.

A German and an American are building houses. They place a bet on whose house will be finished first. After four weeks, the American announces triumphantly, ‘Only 14 days and my NY house is finished!’ to which his German friend excitedly replies, ‘Only 14 more forms to fill out and then I can get started, I'm still waiting for the bomb survey’

ps A Bavarian luthier sold me the best cello I ever had.