GQ 671 then A3 246 at Athens
Istanbul → Athens → Samos
Timetable, Athens time
23:10GQ 671 from Istanbul at the gate
15:10A3 246 to Samos leaves the gate
16 h apart on the timetable, overnight
A3 246 leaves 16 h after GQ 671 arrives on the timetable: more than half a day, so not a connection we count.