Report: H9000 arrived yesterday. Registered it. Ran LAN cable to network router and updated firmware. Ran USB cable to Thunderbolt 3 dock connected to iMac. Synced H9000 externally to Apollo x8p via word clock at 96kHz. Created aggregate device of 3 Apollo x3p and H9000. In Logic, made that aggregate device the preferred audio device. Based on the cannel count, H9000 shows up in Logic. So far, everything has gone very smoothly. Must now figure out routing for the current setup. Hoping the H9000 User Guide makes that clear.

Regarding Dante, compared with USB, what are the advantages other than 32/32 channel I/O?