GQ 311 then TK 1850 at Athens
Samos → Athens → Istanbul
Timetable, Athens time
16:45GQ 311 from Samos at the gate
15:45TK 1850 to Istanbul leaves the gate
23 h apart on the timetable, overnight
TK 1850 leaves 23 h after GQ 311 arrives on the timetable: more than half a day, so not a connection we count.