Yep, I caught that from reading the manual.
Both were connected to the coax in ports, thats why I needed the splitter in the first place.
Both channels would work well in isolation from eachother, but when used at the same time, transfer speeds would crash.
So, I was able to route my ethernet cable through a concrete wall next to a pipe into the basement where the ONT is. I plugged it in to the ONT, and plugged the other end into the ethernet plug on the Westell modem.
After calling Verizon and having them switch the ONT it worked, and it reduced my latencies to the outside world by ~3ms on average
Then I released my DHCP lease, and switched to my Netgear WNDR3700, and it worked too, giving me an additional ~3ms latency reduction on average.
After that I connected one of the two MCA1001's (the one I previously configured at 1150mhz) and the set top boxes work just as well as they did on either the Actiontec or the Westell.
So I guess I now have a setup #9 from the FAQ. Couldn't be happier. This seems like the setup to have unless you really need remote DVR, on-screen called ID or Verizon's CPE Management interface (whatever this is?)
My bandwidth is every bit as good as with the Westell modem (31Mbps down, 24.8MBps up, I pay for 25/25) but my latencies to the closest test servers dropped from an average of 13ms to an average of 7ms, which I am pretty happy with
Next step (once I have given this setup a few days to see if there are any intermittent problems) is to reflash my router with DD-WRT and see if that works
Now, what do I do with this second MoCA box... Is there a room in the house with a coax plug I need wired internet in maybe? Too bad MoCA doesn't provide gigabit speeds.
Thank you for all your help