AF 9451 then U2 6638 at Charles de Gaulle
Nantes → Paris → Birmingham (UK)
Timetable, Paris time
11:20AF 9451 from Nantes at the gate
09:15U2 6638 to Birmingham (UK) leaves the gate
21 h 55 apart on the timetable, overnight
U2 6638 leaves 21 h 55 after AF 9451 arrives on the timetable: more than half a day, so not a connection we count.