EC 1703 then IB 755 at Madrid
Nice → Madrid → Düsseldorf
Timetable, Madrid time
20:40EC 1703 from Nice at the gate
16:40IB 755 to Düsseldorf leaves the gatealso LA 1775, VY 5080, AT 5471, AA 8664
20 h apart on the timetable, overnight
IB 755 leaves 20 h after EC 1703 arrives on the timetable: more than half a day, so not a connection we count.