BA 212 then BA 300 at Heathrow
Boston → London → Paris Charles de Gaulle
Timetable, London time
06:25BA 212 from Boston at the gate
06:20BA 300 to Paris Charles de Gaulle leaves the gate
23 h 55 apart on the timetable, overnight
BA 300 leaves 23 h 55 after BA 212 arrives on the timetable: more than half a day, so not a connection we count.