Hello,
I have a problem with the output signal from one of my Octamics.

I recently created an aggregate on Mac as follows: Fireface 800 (connected in double ADAT with an Octamic I), the second interface is an Apollo 8 which receives the clock from the FF800. The whole runs at 96khz.

Now, the aggregate itself works and Pro Tools reads everything correctly. Correct and functioning inputs, FF800 and Apollo outputs included. The only ones that doesn’t work are those of the Octamic.

Note: once the Octamic outputs have been assigned in Pro tools, the signal also arrives correctly at TotalMix (which in fact shows me the signal output from the adat outputs). But in the end, no signal arrives in the preamp for headphones listening. I suppose I'm doing something wrong in the TotalMix but...
Where am I doing wrong?

Thank you for your attention and hoping for your help!