Different classes always trade with different tickers. When they trade, of course: Google has also a non-traded B class. (By the way, I don’t think the first statement is correct.)
- https://www.cii.org/dualclass_stock - https://citywireusa.com/professional-buyer/news/crown-duals-... - https://www.washingtonpost.com/business/dual-class-shares/20...