AF 1231 then U2 4501 at Charles de Gaulle
Milan → Paris → Nice
Timetable, Paris time
08:15AF 1231 from Milan at the gate
06:55U2 4501 to Nice leaves the gate
22 h 40 apart on the timetable, overnight
U2 4501 leaves 22 h 40 after AF 1231 arrives on the timetable: more than half a day, so not a connection we count.