IB 630 then EW 9511 at Madrid
Zurich → Madrid → Düsseldorf
Timetable, Madrid time
17:20IB 630 from Zurich at the gatealso LA 1673, VY 5374
13:10EW 9511 to Düsseldorf leaves the gate
19 h 50 apart on the timetable, overnight
EW 9511 leaves 19 h 50 after IB 630 arrives on the timetable: more than half a day, so not a connection we count.