Network TV goes by their Neilsen ratings. Shockingly, beyond the northeast and Canada, NHL Hockey doesn't have the TV audience mass appeal. As near as I can tell, in the final round of the Stanley Cup they do.
One would think the semi-final series with NY Rangers and NJ Devils would be more highly watched.
According to their (NBC) publcity page the televised coverage looks like this:
For the first time in the 95-year history of the NHL, every Stanley Cup Playoff game will be televised nationally. The NBC Sports Group will provide unprecedented access to the NHL Stanley Cup Playoffs in April, May and June, televising as many as 105 playoff games and possibly more than 262.5 hours of programming. Games will be presented on NBC, the NBC Sports Network, the NHL Network, and NBCUniversal’s business channel CNBC in primetime.
NBC Sports Network 24
NHL Network 5
--NBC Sports Group--