U2 4668 then U2 4501 at Charles de Gaulle
Krakow → Paris → Nice
Timetable, Paris time
21:50U2 4668 from Krakow at the gate
14:15U2 4501 to Nice leaves the gate
16 h 25 apart on the timetable, overnight
U2 4501 leaves 16 h 25 after U2 4668 arrives on the timetable: more than half a day, so not a connection we count.