My setup is :
MAC (with Overture 3.6) --> PC (GPO) w Layla 8 in/out--> Roland VS1680 HD Recorder

The "-->" is handled by emagic Unitor 8 MkII.

Is there any way that Overture can be MIDI Master or Slave to the VS1680?
MTC? World Clock?
I do a lot of multitrack recording, so synch'ing both would be essential.
If Overture can't synch, would Finale or Sibelius do so?