EW 9766 then UA 12 at Zurich
Düsseldorf → Zurich → Chicago
Timetable, Zurich time
18:10EW 9766 from Düsseldorf at the gate
09:40UA 12 to Chicago leaves the gate
15 h 30 apart on the timetable, overnight
UA 12 leaves 15 h 30 after EW 9766 arrives on the timetable: more than half a day, so not a connection we count.