A3 711 then A3 224 at Athens
Barcelona → Athens → Kos
Timetable, Athens time
15:10A3 711 from Barcelona at the gate
14:55A3 224 to Kos leaves the gate
23 h 45 apart on the timetable, overnight
A3 224 leaves 23 h 45 after A3 711 arrives on the timetable: more than half a day, so not a connection we count.