The Chiefs cruised to an 11–2–1 record in 1966, and defeated the defending AFL Champion Buffalo Bills in the AFL Championship Game. The Chiefs were invited to play the NFL's league champion Green Bay Packers in the first AFL–NFL World Championship Game. Kansas City and Green Bay played a close game for the first half, but Green Bay took control in the final two quarters, winning the game by a score of 35–10. The Chiefs lost the game but gained the respect of several Packers opponents following the game. The Chiefs' inter-league match-up with the Packers was not the last time that they would face an NFL opponent, especially on the championship stage. The following August, Kansas City hosted the NFL's Chicago Bears in the 1967 preseason and won the game 66–24.