AF 1704 then U2 819 at Gatwick
Paris Charles de Gaulle → London → Belfast International
Timetable, London time
09:00AF 1704 from Paris Charles de Gaulle at the gate
08:40U2 819 to Belfast International leaves the gate
23 h 40 apart on the timetable, overnight
U2 819 leaves 23 h 40 after AF 1704 arrives on the timetable: more than half a day, so not a connection we count.