I had read somewhere in the forum ,that old Z170 Mobos with internal TH and Sierra could work with antelope thunderbolt.
So, i had searched in second hand webs to find an Asus Thunderbolt EX II card. Just to test.
I had plugged it (without cable because is different) in a Gigabyte Z390 Extreme Mobo with an i9 9900K, and Interface was recogniced fine in Antelope pannel with all remote control functions and appears in audio panel ("Antelope Zen Tour")
After updated Thunderbolt Antelope Driver and Antelope Control Panel, everything to latest version, not recognize it anymore.