EW 9680 then GQ 670 at Athens
Düsseldorf → Athens → Istanbul
Timetable, Athens time
10:35EW 9680 from Düsseldorf at the gate
06:55GQ 670 to Istanbul leaves the gate
20 h 20 apart on the timetable, overnight
GQ 670 leaves 20 h 20 after EW 9680 arrives on the timetable: more than half a day, so not a connection we count.