BW Formation Duo in combination with Formation audio on Nucleus

Hello,

just installed my new B&W Formation setup with Roon under the following constellation:

Formation Duo with FW 2.50
Formation Audi with FW 2.50
Nucleus Type B with the following credits:

Before I installed the Audio box I was able to see the Duo loudspeakers listed under Roon ready and could address them individually. Now with the audio box they are not visible any more under Roon ready and only the audio box is listed and the duo speakers are not visible any more. Also Airplay streaming is not possible anymore.

Do I need to run the signals from Roon to Audio and from there to the duo speaker? How can I address the sound directly to the speakers. Does audio is dominating the flow of sound and Airplay from iPhone to the speakers directly is not possible anymore?

Anyone who experienced the same and is there a workaround enabling back direct streaming to the duo speakers?

Any insight highly appreciated and thanks in advance for any support.

Beside that the Duo speakers are amazing and I am so happy having easy going Roon with this great output of the Duos on hand,. I can recommend this setting ver much - despite the issue with the audio box described above.

CU

Andreas