EC 1703 then EW 9511 at Madrid
Nice → Madrid → Düsseldorf
Timetable, Madrid time
20:40EC 1703 from Nice at the gate
13:10EW 9511 to Düsseldorf leaves the gate
16 h 30 apart on the timetable, overnight
EW 9511 leaves 16 h 30 after EC 1703 arrives on the timetable: more than half a day, so not a connection we count.