Join Date: Oct 2010
Location: National Capital Region
Not sure I am fully understanding, but here is what I did as I think this is what you want.
I have the HH2000 and my own Netgear R7000 router.
The R7000 is connected to the HH2000 by network cable. In the HH2000 settings, I put the R7000 in the DMZ and set the IP manually (reserved). In the R7000 Internet IP settings, I set the R7000 get the IP address dynamically. This ensures the R7000 gets the IP address from the HH2000, and it will also set the default gateway to the HH2000 (or it should at least); if this doesn't happen you can set those values manually.
I also turned off the wifi on the HH2000 and only use the wifi on the R7000, since this would force all my devices to connect to the internet via my router (R7000) and not the HH2000, this would ensure your VPN connection is used at all times.
There is no impact (at least none that I have seen) on the Fibe TV service, since all that still runs through the HH2000, including the VAP if you have one (for connecting the wireless receivers to the PVR/Fibe TV service).