AF 1581 then U2 4697 at Charles de Gaulle
London Heathrow → Paris → Budapest
Timetable, Paris time
13:50AF 1581 from London Heathrow at the gate
11:15U2 4697 to Budapest leaves the gate
21 h 25 apart on the timetable, overnight
U2 4697 leaves 21 h 25 after AF 1581 arrives on the timetable: more than half a day, so not a connection we count.