BA 483 then BA 664 at Heathrow
Barcelona → London → Larnaca
Timetable, London time
19:25BA 483 from Barcelona at the gate
17:35BA 664 to Larnaca leaves the gate
22 h 10 apart on the timetable, overnight
BA 664 leaves 22 h 10 after BA 483 arrives on the timetable: more than half a day, so not a connection we count.