A3 313 then GQ 670 at Athens
Heraklion → Athens → Istanbul
Timetable, Athens time
07:20A3 313 from Heraklion at the gate
07:00GQ 670 to Istanbul leaves the gate
23 h 40 apart on the timetable, overnight
GQ 670 leaves 23 h 40 after A3 313 arrives on the timetable: more than half a day, so not a connection we count.