Has anyone got their fully bridged NAH working with legacy PVR/STB?

It's a shame that I can only bridge one port or the entire NAH. I've been advised that if the NAH is fully bridged then my legacy PVR/STB will no longer work.

Has anyone managed to get the PVR/STB with a fully bridged NAH? If so, what are the details of your setup to get this working? I do have a Ubiquiti UCG-Fiber.