Tivo Roamio, Tivo Mini, and Apple TV

Hello,

My current setup is:

Upstairs Office:
Router connected to Actiontec ECB2500C MOCA Adapter.

Bedroom 1:
Tivo Mini connected via Coax.

Bedroom 2:
Tivo Mini connected via Coax.

Living Room:
Tivo Roamio connected via Coax.

I'm looking to connect my Apple TV via Ethernet located downstairs in the living room where my Tivo Roamio is connected to the TV.
All works fine with this setup.

If I wanted to connect the Apple TV via Ethernet in the Living Room, Do I need to purchase three Actiontec ECB2500C MOCA Adapters? Living Room, Bedroom 1, and Bedroom 2?

Or is there another way to do this?

Any additional info would be appreciated.

Thank You,
Nick