OP1F + OP1+OP-Z - how to midi/sync all 3 units?

Has anyone managed to get all 3 units (OP1F + OP1+OP-Z) synced together successfully?

Just got my op1f and had a quick play around with a cheap ugreen usb-c hub but could only ever get two out of three units synced or responding to start/stop messages.

Am hoping there is a way to get all 3 units playing along nicely with each other!

Played around with this a bit more. Managed to get it working with the cheap ugreen usb-c hub if I connect it to my iPad and use AUM to send midi clock to all 3 devices.

Haven’t been able to get it working with just the OP1/F/Z on their own as of yet.