A3 275 then GQ 222 at Athens
Chios → Athens → Kos
Timetable, Athens time
17:00A3 275 from Chios at the gate
15:30GQ 222 to Kos leaves the gate
22 h 30 apart on the timetable, overnight
GQ 222 leaves 22 h 30 after A3 275 arrives on the timetable: more than half a day, so not a connection we count.