Does Orbi work with FiOS, directly to the ONT, with ethernet backhaul yet?

No again, you don't know what you're talking about. The Orbi firmware was set up so poorly that it didn't use to properly identify which unit is the router and which is the secondary unit when connected directly to the fios ont while using ethernet backhaul. The reason why it worked with wireless was because only the main Orbi was physically connected to the ONT so no mixup could happen. This resulted in the system going useless after 15 minutes of a full factory reset because eventually both units would be tricked into swapping as primary and secondary which causes the whole thing to collapse because only one unit is actually connected to the ONT. It was a KNOWN issue on the forums with responses from Netgear saying they were working on it. I'm asking if that has been resolved. I can tell you love having that Sensei next to your name so you mindlessly reply to as many posts as you can but please, realize in this instance you have no idea what you're talking about.