Audio interface in conjunction with Decklink

Hi,
I'm trying to set up Resolve for recording using my Apollo Twin X audio interface, to handle the audio part.
And a decklink ultrastudio monitor for the output for the video. But when I plug in the decklink, I can't select the Audio interface to handle the Audio.
Any Ideas?
All the best
I'm trying to set up Resolve for recording using my Apollo Twin X audio interface, to handle the audio part.
And a decklink ultrastudio monitor for the output for the video. But when I plug in the decklink, I can't select the Audio interface to handle the Audio.
Any Ideas?
All the best