BA 361 then BA 352 at Heathrow
Lyon → London → Nice
Timetable, London time
19:05BA 361 from Lyon at the gate
18:05BA 352 to Nice leaves the gate
23 h apart on the timetable, overnight
BA 352 leaves 23 h after BA 361 arrives on the timetable: more than half a day, so not a connection we count.