IB 535 then EW 9603 at Lisbon
Madrid → Lisbon → Düsseldorf
Timetable, Lisbon time
18:05IB 535 from Madrid at the gate
17:50EW 9603 to Düsseldorf leaves the gate
23 h 45 apart on the timetable, overnight
EW 9603 leaves 23 h 45 after IB 535 arrives on the timetable: more than half a day, so not a connection we count.