BA 347 then BA 970 at Heathrow
Nice → London → Hamburg
Timetable, London time
19:25BA 347 from Nice at the gate
18:25BA 970 to Hamburg leaves the gate
23 h apart on the timetable, overnight
BA 970 leaves 23 h after BA 347 arrives on the timetable: more than half a day, so not a connection we count.