A3 633 then GQ 670 at Athens
Edinburgh → Athens → Istanbul
Timetable, Athens time
17:50A3 633 from Edinburgh at the gate
06:55GQ 670 to Istanbul leaves the gate
13 h 05 apart on the timetable, overnight
GQ 670 leaves 13 h 05 after A3 633 arrives on the timetable: more than half a day, so not a connection we count.