[AppleFan28751]

with two Nimbus Steel Series controllers. Both controllers are connected via Bluetooth. On the two player game, I can only get one controller to work on the right player. The other player on the left can only be controlled by the remote that came with the AppleTv. Do I have to disconnect the remote for the other controller to work? How does the remote get disconnected? Any help would be appreciated.
P.S. Rovio is no help at all. I have submitted five tickets with no response.

[Just_Me_D]

According to Apple:

"Your Apple TV (4th generation) can support several Bluetooth accessories simultaneously, up to this many:

• One Siri Remote or Apple TV Remote*
• One Bluetooth keyboard
• Four MFi (Made for iOS) Bluetooth controllers (Unless you also connect a Bluetooth audio accessory. If so, you can connect only one MFi controller).

You might be able to pair more accessories, but at some point you might need to unpair others to allow for new ones."
Source: https://support.apple.com/en-us/HT205302

With that in mind, try disconnecting the  remote and see if that helps.