Never,
Pittsburgh played Dallas (3x), Arizona, Seattle, Minnesota,and the LA Rams in their Superbowl appearances.
Chicago played New England and Indianapolis.
Because the Super Bowl is played at neutral sites.
The Pittsburgh Steelers and the Dallas Cowboys played in Super Bowl X. Pittsburgh won 21-17.
Pittsburgh and Dallas
As of the start of the 2007 season, the last Super Bowl played was Super Bowl XLI. In Super Bowl XLI, the Indianapolis Colts defeated the Chicago Bears 29-17.
Pittsburgh Steelers running back Jerome Bettis played in his hometown of Detroit, Michigan in Super Bowl XL.
Pittsburgh, New York Giants, Chicago
Super Bowl IXThe Pittsburgh Steelers beat the Minnesota Vikings 16 -6in Super Bowl IX played on January 12, 1975.
The Pittsburgh Steelers played in both Super Bowl XL and Super Bowl XLIII. They beat the Seattle Seahawks in Super Bowl XL and the Arizona Cardinals in XLIII.
Super Bowl XLIIIThe Pittsburgh Steelers beat the Arizona Cardinal 27-23 in Super Bowl XLIII played on February 1, 2009.
Super Bowl XIIIThe Pittsburgh Steelers beat the Dallas Cowboys 35-31 in Super Bowl XIII played on January 21, 1979.
Yes. They won Super Bowl XL played on February 5, 2006.
Super Bowl XLIIIThe Pittsburgh Steerlers beat the Arizona Cardinals 27-23 in Super Bowl XLIII played on February 1, 2009.