They just aren't. Some teams are in the AFC, some are in the NFC. My guess is that the NFL didn't want two teams so close to each other to be in the same conference. Similar to the 49ers and Raiders. Or the Jets and the Giants.
The Philadelphia Eagles have beaten the Steelers 20 timesin Pittsburgh.
I would say the Philadelphia Eagles and the Pittsburgh Steele's.
The Pittsburgh Steelers
The Philadelphia Eagles have a record of 27-9-2 against the Steelers in Philadelphia.
The Steelers have never faced the Eagles in the Super Bowl.
Pittsburgh Steelers, and the Philadelphia Eagles.
The Steelers merged with the Eagles in 1943 forming the team Phil-Pitt. They were nicknamed the "Steagles".
The Philadelphia Eagles and thr Pittsburgh Steelers
Six Super Bowl victories for the Steelers. Zero Super Bowl victories for the Eagles.
The Steelers merged with the Eagles in 1943 forming the team Phil-Pitt, aka the "Steagles".
The last time the Philadelphia Eagles defeated the Steelers was in Philadelphia on September 21, 2008, by the score of 15-6.
The Philadelphia Eagles lead the all time series 46-28-3.