Complex sentence: As Oliver and Nancy share a farewell embrace at London Bridge, Sikes catches up and grabs both of them, throwing Oliver aside as Nancy tries to protect him by pulling Sikes away, angering him.
Split into simpler sentences: As Oliver and Nancy share a farewell embrace at London Bridge, Sikes catches up and grabs both of them and throws Oliver aside. Nancy then tries to protect Oliver by pulling Sikes away, angering him.