A3 117 then GQ 670 at Athens
Thessaloniki → Athens → Istanbul
Timetable, Athens time
15:35A3 117 from Thessaloniki at the gate
07:00GQ 670 to Istanbul leaves the gate
15 h 25 apart on the timetable, overnight
GQ 670 leaves 15 h 25 after A3 117 arrives on the timetable: more than half a day, so not a connection we count.