Complex sentence: Daryl tries to convince Dwight he is not who they think he is but they do not believe him and tell Daryl they are not going back to the community, and Daryl is their insurance in case they are found while they look for Patty.
Split into simpler sentences: Daryl tries to convince Dwight he is not who they think he is but they do not believe him. They tell Daryl they are not going back to the community, and Daryl is their insurance in case they are found while they look for Patty.