Yes, they are. Sometimes the lines become problematic. A famous example is Apple Computer and Apple Corps (the Beatles music holding company) with a long hist

Yes, they are. Sometimes the lines become problematic. A famous example is Apple Computer and Apple Corps (the Beatles music holding company) with a long history of arguing about lines: https://en.wikipedia.org/wiki/Apple_Corps_v_Apple_Computer https://en.wikipedia.org/wiki/Apple_Corps_v_Apple_Computer