BA 873 then BA 664 at Heathrow
Krakow → London → Larnaca
Timetable, London time
18:05BA 873 from Krakow at the gate
17:35BA 664 to Larnaca leaves the gate
23 h 30 apart on the timetable, overnight
BA 664 leaves 23 h 30 after BA 873 arrives on the timetable: more than half a day, so not a connection we count.