SM 651 then GQ 222 at Athens
Cairo → Athens → Kos
Timetable, Athens time
19:00SM 651 from Cairo at the gate
15:30GQ 222 to Kos leaves the gate
20 h 30 apart on the timetable, overnight
GQ 222 leaves 20 h 30 after SM 651 arrives on the timetable: more than half a day, so not a connection we count.