BA 309 then BA 782 at Heathrow
Paris Charles de Gaulle → London → Stockholm
Timetable, London time
16:00BA 309 from Paris Charles de Gaulle at the gate
15:40BA 782 to Stockholm leaves the gate
23 h 40 apart on the timetable, overnight
BA 782 leaves 23 h 40 after BA 309 arrives on the timetable: more than half a day, so not a connection we count.