How prepared was he for the crime scene clean up? He must have had help, and think of all the materials he needed for the clean up did he and accomplices bring all that a long? You don't go down to the local store to buy clean up materials unless you want to later get caught.
Materials needed for crime scene clean up: heavy duty contractor bags, sponges, cleaning agents, cloths and absorbent materials. And after the clean up you have to drop the Suburban at Waveny without forensic evidence being left in the JD vehicle. So he must have had help or a wrecking crew did the foul deed took the body elsewhere for disposal and clean up materials back up to Farmington, I don't know why, New Canaan dump or other local dumping place like NRS in Norwalk was an option.