Context: Under the CBC's current arrangement with Rogers Communications for National Hockey League broadcast rights, Hockey Night in Canada broadcasts on CBC-owned stations and affiliates are not technically aired over the CBC Television network, but over a separate CRTC-licensed part-time network operated by Rogers. This was required by the CRTC as Rogers exercises editorial control and sells all advertising time during the HNIC broadcasts, even though the CBC bug and promos for other CBC Television programs appear throughout HNIC.

Question: Which company owns the rights to National Hockey League broadcasts?
Answer: Rogers Communications

Question: Where are affiliates of HNIC aired?
Answer: a separate CRTC-licensed part-time network operated by Rogers

Question: Where are HNIC broadcasts aired?
Answer: on CBC-owned stations

Question: What company was purchased by the CBC in order to air the National Hockey League?
Answer: Unanswerable

Question: What is the most popular program that is aired by CBC-television networks?
Answer: Unanswerable

Question: Why was it necessary to the CBC to purchase Rogers Communication?
Answer: Unanswerable

Question: The CRTC has limited The CBC promos and other CBC television programs that can appear during which broadcast?
Answer: Unanswerable