A3 373 then GQ 670 at Athens
Mykonos → Athens → Istanbul
Timetable, Athens time
14:00A3 373 from Mykonos at the gate
06:55GQ 670 to Istanbul leaves the gate
16 h 55 apart on the timetable, overnight
GQ 670 leaves 16 h 55 after A3 373 arrives on the timetable: more than half a day, so not a connection we count.