There was one user who experienced bad behavior with PLs and orbi. I believe once he removed his, his Orbi started working well. I would probably avoid using any PLs with the Orbi system.
It might be helpful to clarify the intended purpose of the PowerLine adapters. For example, I have an ORBI and Satellite, where the Satellite connects over WiFi. I also have an ethernet switch connected to one of the ORBI ports, and one of its ports goes to a PowerLIne adapter which connects to a WiFi access point in my garage. It works just fine. I have not tried to use PowerLine to connect the Satellite to the ORBI router. How do you intend to use PowerLine?
PowerLine is tricky. For example, my PowerLine adapters (TP-Link) have a "power-saving" feature which turns the adapter off if a device has been inactive for 5 minutes. (I disabled that feature.)
