Actually, you can use MIDI Time Code very easily.
All you need is
MIDI interface on both machines
the master computer set to “Internal Timecode” in Sync Setup
the slave computer in Sync Setup set to “MIDI Time Code”, choosing the MIDI interface as source
on both machines: use the same framerate and the same time code start
also in the slave machine, put the SYNC option in the transport window to IDLE, not INT.
I have done that several times, should work without problems. Moving the cursor position on the master machine takes you immediately to the same position in the slave machine.This way you can enslave it even with ProTools