A3 111 then GQ 670 at Athens
Thessaloniki → Athens → Istanbul
Timetable, Athens time
11:55A3 111 from Thessaloniki at the gate
06:55GQ 670 to Istanbul leaves the gate
19 h apart on the timetable, overnight
GQ 670 leaves 19 h after A3 111 arrives on the timetable: more than half a day, so not a connection we count.