BA 873 then BA 316 at Heathrow
Krakow → London → Paris Charles de Gaulle
Timetable, London time
18:05BA 873 from Krakow at the gate
16:25BA 316 to Paris Charles de Gaulle leaves the gate
22 h 20 apart on the timetable, overnight
BA 316 leaves 22 h 20 after BA 873 arrives on the timetable: more than half a day, so not a connection we count.