BTW Data, I see from your signature that you have a UCX II and ADI-2 DAC FS.
You could also build up such a setup:
RayDAT
+---------------ADAT1 IN--------<-----12Mic
+---------------ADAT2 IN--------<-----12Mic (in single speed a few channels are unused)
+---------------ADAT3 IN--------<-----12Mic (if you want recordings double speed)
+---------------ADAT1 OUT-----------------> ADI-2 DAC FS ------> Monitors / Phones (ADI-2 DAC can read ch 1+2 from ADAT)
+---------------UCX II----<------ADAT OUT--- UFX II
+---------------UCX II---->------ADAT IN----- UCX II
Or if only single speed is needed:
UFX II+---ADAT1 IN-------<-----12Mic
+---ADAT2 IN-------<-----12Mic
+---ADAT2 OUT (SPDIF)-----> ADI-2 DAC FS---->Monitor / phones
More consequently would be to get a MADI-based solution, then you can also use the headphone output of the 12Mic for monitoring and to be able to further expand the solution.
UFX+---ADAT2 OUT (SPDIF)----ADI-2 DAC
| |
| + 12Mic--+-<--12Mic inputs
| | +-->--Phones
| |
+--+
MADI
BR Ramses - UFX III, 12Mic, XTC, ADI-2 Pro FS R BE, RayDAT, X10SRi-F, E5-1680v4, Win10Pro22H2, Cub14