Complex sentence: He also said that he had chained Sessions to a tree, and discarded her body close to Fort Myers in the Caloosahatchee River, but because Knickerbocker was not living in Gainesville at the time of Sessions' disappearance, the feasibility of his involvement has been questioned.
Split into simpler sentences: He also said that he had chained Sessions to a tree, and discarded her body close to Fort Myers in the Caloosahatchee River. Because Knickerbocker was not living in Gainesville at the time of Sessions' disappearance, the feasibility of his involvement has been questioned.