GQ 311 then OS 802 at Athens
Samos → Athens → Vienna
Timetable, Athens time
15:40GQ 311 from Samos at the gate
13:25OS 802 to Vienna leaves the gate
21 h 45 apart on the timetable, overnight
OS 802 leaves 21 h 45 after GQ 311 arrives on the timetable: more than half a day, so not a connection we count.