BA 349 then KL 1012 at Heathrow
Nice → London → Amsterdam
Timetable, London time
21:05BA 349 from Nice at the gate
17:05KL 1012 to Amsterdam leaves the gate
20 h apart on the timetable, overnight
KL 1012 leaves 20 h after BA 349 arrives on the timetable: more than half a day, so not a connection we count.