BA 933 then LX 333 at Heathrow
Düsseldorf → London → Zurich
Timetable, London time
15:00BA 933 from Düsseldorf at the gate
13:45LX 333 to Zurich leaves the gate
22 h 45 apart on the timetable, overnight
LX 333 leaves 22 h 45 after BA 933 arrives on the timetable: more than half a day, so not a connection we count.