A3 353 then GQ 220 at Athens
Santorini → Athens → Kos
Timetable, Athens time
08:55A3 353 from Santorini at the gate
07:05GQ 220 to Kos leaves the gate
22 h 10 apart on the timetable, overnight
GQ 220 leaves 22 h 10 after A3 353 arrives on the timetable: more than half a day, so not a connection we count.