XB8 MoCA ON + MoCA Backhall to xFi Pod (2nd Gen) — anyone got this working?

My setup

• XB8 with MoCA turned ON

• Two xFi Pods (Gen 2)

• Two identical MoCA 2.5 adapters (e.g., two ScreenBeam ECB7250s)

Goal
Use the XB8’s built-in MoCA so a single MoCA adapter on the far side provides MoCA Backhall to the xFi Pod (no extra gear next to the XB8).

What works

• Ethernet test: Long Ethernet from XB8 to Pod → Pod comes online.

• Wi-Fi: Pod comes online over Wi-Fi.

• External bridge: Coax splitter before XB8 + MoCA adapter and XB8 connected via Coax after splitter + XB8 connected to MoCA adapter via Ethernet, second MoCA adapter at Pod → MoCA Backhall to xFi Pod works.

What fails (the setup I want)

• XB8 MoCA ON + one far-end MoCA adapter → MoCA Backhall to xFi Pod does not work (Pod shows offline in the app).

Ask
Has anyone made XB8 MoCA ON → MoCA Backhall to xFi Pod work without adding a MoCA adapter next to the XB8?
If yes, please share:

• Your XB8 version and any MoCA setting you changed

• The steps you used to add the Pod (order/timing)

• Your MoCA adapter model

• The splitter/PoE filter you used (just the names)