EW 9766 then LX 324 at Zurich
Düsseldorf → Zurich → London Heathrow
Timetable, Zurich time
18:40EW 9766 from Düsseldorf at the gate
15:30LX 324 to London Heathrow leaves the gate
20 h 50 apart on the timetable, overnight
LX 324 leaves 20 h 50 after EW 9766 arrives on the timetable: more than half a day, so not a connection we count.