A3 609 then A3 224 at Athens
London Heathrow → Athens → Kos
Timetable, Athens time
03:50A3 609 from London Heathrow at the gate
15:55A3 224 to Kos leaves the gate
12 h 05 apart on the timetable
A3 224 leaves 12 h 05 after A3 609 arrives on the timetable: more than half a day, so not a connection we count.