A3 283 then GQ 670 at Athens
Corfu → Athens → Istanbul
Timetable, Athens time
09:35A3 283 from Corfu at the gate
06:55GQ 670 to Istanbul leaves the gate
21 h 20 apart on the timetable, overnight
GQ 670 leaves 21 h 20 after A3 283 arrives on the timetable: more than half a day, so not a connection we count.