A3 841 then JU 533 at Athens
Düsseldorf → Athens → Belgrade
Timetable, Athens time
16:05A3 841 from Düsseldorf at the gate
15:50JU 533 to Belgrade leaves the gate
23 h 45 apart on the timetable, overnight
JU 533 leaves 23 h 45 after A3 841 arrives on the timetable: more than half a day, so not a connection we count.