Complex sentence: They defeated the New York Giants 38--13 in the wild card round of the playoffs, defeated the Dallas Cowboys in the divisional round of the playoffs, and will play the Atlanta Falcons in the NFC Championship game.
Split into simpler sentences: They defeated the New York Giants 38--13 in the wild card round of the playoffs and They defeated the Dallas Cowboys in the divisional round of the playoffs. And will play the Atlanta Falcons in the NFC Championship game.