BA 349 then EW 9465 at Heathrow
Nice → London → Düsseldorf
Timetable, London time
21:05BA 349 from Nice at the gate
13:55EW 9465 to Düsseldorf leaves the gate
16 h 50 apart on the timetable, overnight
EW 9465 leaves 16 h 50 after BA 349 arrives on the timetable: more than half a day, so not a connection we count.