Complex sentence: The most recent seven-touchdown game occurred on November 1,2015, when Drew Brees did so with the New Orleans Saints, during a game in which the two teams' quarterbacks combined for 13 passing touchdowns, also an NFL record.
Split into simpler sentences: The most recent seven-touchdown game occurred on November 1,2015, when Drew Brees did so with the New Orleans Saints. During that game the two teams' quarterbacks combined for 13 passing touchdowns, also an NFL record.