The AFL and the NFL champions faced each other in Super Bowl II at the end of the season to determine an overall champion.
RetroSeasons
RetroSeasons recaps past sports seasons through stories, photos, videos, and stats from every team, league, and stadium in history. Coverage includes the NBA, NFL, MLB and NHL, as well as vintage media from defunct teams and leagues.
American Football League (AFL)
1967 AFL Season Overview
The season ended when the Oakland Raiders (13–1) hosted the Houston Oilers (9–4–1) in the AFL championship game on December 31. The Raiders won 40–7 and then met the NFL's Green Bay Packers in Super Bowl II two weeks later, won by Green Bay, 33–14.
The AFL's nine teams, grouped into two divisions (5 teams in the Eastern Division), faced each other at least once, and each team would play six others twice. Though the New York Jets and the Houston Oilers were both in the Eastern Division, they met only once that season, on October 15. The best team in the Eastern Division would play against the best in the Western Division in a championship game. If there was tie in the standings, a playoff would be held to determine the division winner.
I sincerely appreciate the research work, and the information being shared. It is important and interesting history.