A3 151 then GQ 310 at Athens
Kavala → Athens → Samos
Timetable, Athens time
11:00A3 151 from Kavala at the gate
10:10GQ 310 to Samos leaves the gate
23 h 10 apart on the timetable, overnight
GQ 310 leaves 23 h 10 after A3 151 arrives on the timetable: more than half a day, so not a connection we count.