GQ 671 then A3 226 at Athens
Istanbul → Athens → Kos
Timetable, Athens time
23:10GQ 671 from Istanbul at the gate
20:35A3 226 to Kos leaves the gate
21 h 25 apart on the timetable, overnight
A3 226 leaves 21 h 25 after GQ 671 arrives on the timetable: more than half a day, so not a connection we count.