A3 871 then GQ 670 at Athens
Warsaw Chopin → Athens → Istanbul
Timetable, Athens time
15:00A3 871 from Warsaw Chopin at the gate
06:55GQ 670 to Istanbul leaves the gate
15 h 55 apart on the timetable, overnight
GQ 670 leaves 15 h 55 after A3 871 arrives on the timetable: more than half a day, so not a connection we count.