Are you talking about just this year? Because it's not true otherwise. In fact, the Jets would play the Patriots if the Jets and Broncos both won this weekend.
The NFL has a TV contract with three broadcast networks (Fox, CBS and ABC) and one cable network (ESPN). Fox shows games involving NFC teams, and CBS shows AFC games. Inter-conference games are split depending on which conference the away team belongs to. ESPN shows one Sunday night game each week, as well as some other games at special times, and ABC shows one game every Monday night. ABC shows two playoff games, while CBS and Fox show one each, on the first weekend, and the rest of the playoff games are split by conference. The Super Bowl is shown by each of the broadcast networks on a three-year rotation.