UA 942 then EW 9603 at Lisbon
Washington → Lisbon → Düsseldorf
Timetable, Lisbon time
10:20UA 942 from Washington at the gate
09:50EW 9603 to Düsseldorf leaves the gate
23 h 30 apart on the timetable, overnight
EW 9603 leaves 23 h 30 after UA 942 arrives on the timetable: more than half a day, so not a connection we count.