BA 323 then BA 540 at Heathrow
Paris Charles de Gaulle → London → Bologna
Timetable, London time
07:35BA 323 from Paris Charles de Gaulle at the gate
07:25BA 540 to Bologna leaves the gate
23 h 50 apart on the timetable, overnight
BA 540 leaves 23 h 50 after BA 323 arrives on the timetable: more than half a day, so not a connection we count.