TORONTO – Canwest Broadcasting’s chief marketing officer, Walter Levitt, will be leaving the company once it is purchased by Shaw Communications.Levitt (pictured), former head of marketing at Alliance Atlantis, came on board in 2005, about two years before Canwest purchased the former Alliance Atlantis specialty channels. He and his team raised the profile and lifted the buzz around the specialties and the main network with several innovative marketing campaigns which invariably included robust digital aspects and social media integration. “As you know, Shaw is a Calgary-based cable and satellite company with a long-serving head of marketing. In planning the integration of the two...