BJ 730 then U2 1630 at Charles de Gaulle
Tunis → Paris → Nice
Timetable, Paris time
17:25BJ 730 from Tunis at the gate
16:45U2 1630 to Nice leaves the gate
23 h 20 apart on the timetable, overnight
U2 1630 leaves 23 h 20 after BJ 730 arrives on the timetable: more than half a day, so not a connection we count.