The Pittsburgh Steelers made official what has seemed evident for weeks: coach Bill Cowher is no longer negotiating an extension to a contract that runs through 2007. The team announced that it has ceased talks with Cowher on signing an extension so he can focus on coaching the returning Super Bowl champions. The team, which has had just two coaches in 38 seasons, has long had a policy of not negotiating contracts during a season, but wants to renew talks with Cowher once the season ends. This is the first time since Cowher was hired by his hometown team in 1992 that he will go into a season with as few as two seasons remaining on his contract. Cowher and the team had been discussing an extension since shortly after the Steelers won the Super Bowl in February.