AF 1561 then U2 6638 at Charles de Gaulle
Zagreb → Paris → Birmingham (UK)
Timetable, Paris time
15:00AF 1561 from Zagreb at the gate
09:15U2 6638 to Birmingham (UK) leaves the gate
18 h 15 apart on the timetable, overnight
U2 6638 leaves 18 h 15 after AF 1561 arrives on the timetable: more than half a day, so not a connection we count.