TSN vs. CBC

Who would have thought that one of the playoffs tougest match-ups would be the CBC vs. TSN? Not me! I don’t get either of those stations.
The two Canadian networks are fighting over playoff games. It’s really complicated. I don’t totally get it. But if Vancouver and Ottawa win their series’, TSN won’t have any games to air.
I don’t really know why the rights aren’t Western Conference/Eastern Conference for the playoffs. Would that be too easy?