The National Ballet of Canada and the Canadian Opera Company will soon be sharing a new home. “Based on the experience of the almost three decades it has taken to move two national companies from the 3,200-seat Hummingbird (formerly O’Keefe) Centre to a new home, the two companies’ relationship will continue to be as fraught as you’d expect between a robust, dynamic, operatic sort of character, flushed with pride because it has been the new building’s prime mover, and a cautious, delicate, balletic character, toeing its way onto someone else’s territory.”