Update

Received the Helix 9 back from Humminbird service. They said all good with network. When I hooked it back up, still no network between the 9 and 7.
Called Humminbird worked through a couple of settings and restoring NAV directories, still no luck. They had me to send both units back into Hbird along with my network cable and dongles so they can get to the root of the problem. Supposed to have them back next week.