The AFL and NFL merged before the start of the 1970 season.
nobody knows
They have all played each other after AFL/NFL merge
The NFL and AFL merged in 1970.
Originally called the Dallas Texans, the chiefs moved to Kansas City and entered the NFL during the NFL-AFL merge in 1970.
1970, the first year of the AFL-NFL merger. Prior to the merger and starting in 1967, there were six divisions in professional football ... 4 in the NFL and 2 in the AFL.
21 times in total if you include the wins before the merge of the NFL/AFL. It is only 19 times if you only count the wins after the merge.
To create a common draft and to maintain the sanctity of player contracts. Franchises from each of the leagues were drafting the same players and were in bidding wars to secure the player. Players under contract in the NFL were moving to the AFL if better money was available
Answer1970, but they entered the AFL in 1959.
1970; they entered the AFL in 1960
1970, but they entered the AFL in 1960.
1970; they entered the AFL in 1960.
1970, but they entered the AFL in 1960.