The 788ci HD and 898c are both Ethernet Compatible so they will work with the MinnKota iPilot Link. Here is the Complete List: http://www.minnkotamotors.com/_docs/...ity7-16-12.pdf
To have both units and the iPilot Link all networked. I would remove and sell the InterLink you can't use Ethernet and InterLink at the same time and you'll get more features and functionality by adding a 5 Port Ethernet Hub and hooking both units and the iPilot Link into the hub and then it can be controlled by either unit.