Bell is renewing its call on the CRTC to reverse a recent decision that forces broadcasters to let Canadian viewers watch U.S. Super Bowl ads, a request that has the support of numerous sports, advertising and artistic groups.
In 2016, the Canadian Radio-television and Telecommunications Commission ordered the Super Bowl broadcaster to stop doing something called simultaneous substitution — better known as simsub — a practice by which Canadian broadcasters take U.S. content and replace U.S. advertisements with Canadian ones.
Normally, Canadian rights holders for major TV events like the Super Bowl take the U.S. feed and then splice in their own advertisements during commercial breaks, which is how they make money to offset the high cost of those broadcasting rights.
CBC News – Aug 1, 2017.