Cornwall and devon are both historic counties,
Cornwall particularly with a unique Celtic heritage different from the Anglo Saxon one in Devon and the rest of England, long established independent councils,
We both like to do things differently to irritate each other lol 😜
most people across the country won't understand the rivalry between both counties until they come here in the west country and experience it first hand 😎
see here in 'murica, we put rural hillbillies into districts with urban hipsters and call it a day