BA 309 then EK 30 at Heathrow
Paris Charles de Gaulle → London → Dubai
Timetable, London time
16:00BA 309 from Paris Charles de Gaulle at the gate
15:50EK 30 to Dubai leaves the gate
23 h 50 apart on the timetable, overnight
EK 30 leaves 23 h 50 after BA 309 arrives on the timetable: more than half a day, so not a connection we count.