The team made it back to the championship game at the end of the 1965 season ( there was no Super Bowl yet ) but lost to the Green Bay Packers .
The team had won the NFL championship in 1964 .
The team , which had won the NFL championship in 1964 , made it back to the championship game at the end of the 1965 season ( there was no Super Bowl yet ) but lost to the Green Bay Packers .