GQ 671 then GQ 294 at Athens
Istanbul → Athens → Alexandroupolis
Timetable, Athens time
23:10GQ 671 from Istanbul at the gate
20:05GQ 294 to Alexandroupolis leaves the gate
20 h 55 apart on the timetable, overnight
GQ 294 leaves 20 h 55 after GQ 671 arrives on the timetable: more than half a day, so not a connection we count.