The Eagles are the party crasher in this year’s Final Four and the coach expects a tight game with the Niners, who have been to the NFC Championship three of last four years The Eagles are the party crashers in this year’s version of the NFL’s Final Four. The other three teams – been here, done that. The AFC title game is a rematch between the Chiefs and Bengals. The 49ers were here last year and lost to the Rams, who have been replaced by the Eagles. This is San Francisco’s third trip to the NFC Championship in the last…