GQ 261 then LX 1839 at Athens
Kefalonia → Athens → Zurich
Timetable, Athens time
18:45GQ 261 from Kefalonia at the gate
18:00LX 1839 to Zurich leaves the gate
23 h 15 apart on the timetable, overnight
LX 1839 leaves 23 h 15 after GQ 261 arrives on the timetable: more than half a day, so not a connection we count.