BA 339 then BA 660 at Heathrow
Nice → London → Larnaca
Timetable, London time
12:15BA 339 from Nice at the gate
10:55BA 660 to Larnaca leaves the gate
22 h 40 apart on the timetable, overnight
BA 660 leaves 22 h 40 after BA 339 arrives on the timetable: more than half a day, so not a connection we count.