GQ 261 then A3 120 at Athens
Kefalonia → Athens → Thessaloniki
Timetable, Athens time
18:45GQ 261 from Kefalonia at the gate
16:35A3 120 to Thessaloniki leaves the gate
21 h 50 apart on the timetable, overnight
A3 120 leaves 21 h 50 after GQ 261 arrives on the timetable: more than half a day, so not a connection we count.