I think one is for heater and the other for water in fuel. Perhaps Fleece combined some wiring?
Found this on Cummins Forum:
https://www.cumminsforum.com/threads/fuel-filter-wiring.2498373/#:~:text=The%20housing%20in%20the%20engine,WIF%20sensor%20and%20a%20heater.
So I popped off the Metalcloak skid trap door and took some measurements. If I build a bracket to mount the housing with the inlet/outlet line looking at the stock fittings and raise it to bottom of cab there should be plenty of room., outstanding!