Complex sentence: Following Battleground, Enzo and Cass proceeded to feud with Kevin Owens and Chris Jericho, which culminated at SummerSlam, where the two lost to Jericho and Owens.
Split into simpler sentences: Following Battleground, Enzo and Cass proceeded to feud with Kevin Owens and Chris Jericho. The feud culminated at SummerSlam, where the two lost to Jericho and Owens.