A3 303 then GQ 670 at Athens
Heraklion → Athens → Istanbul
Timetable, Athens time
08:55A3 303 from Heraklion at the gate
07:00GQ 670 to Istanbul leaves the gate
22 h 05 apart on the timetable, overnight
GQ 670 leaves 22 h 05 after A3 303 arrives on the timetable: more than half a day, so not a connection we count.