GQ 311 then A3 120 at Athens
Samos → Athens → Thessaloniki
Timetable, Athens time
16:45GQ 311 from Samos at the gate
16:35A3 120 to Thessaloniki leaves the gate
23 h 50 apart on the timetable, overnight
A3 120 leaves 23 h 50 after GQ 311 arrives on the timetable: more than half a day, so not a connection we count.