sentences:  The rivalry began in and is the league's most played, with 200 regular-season and post-season games.However, both meetings were canceled in 1982, making Lions–Packers the longest continuous rivalry (they’ve played each other twice every season since 1932).The Packers and Bears have played in the same conference or division since the NFL went to a conference format in 1933; they played in the NFL's Western Conference from 1933 to 1970, and have been in the NFC North since 1970 (known as the NFC Central from 1970–2001).