FI 544 then U2 4501 at Charles de Gaulle
Reykjavík → Paris → Nice
Timetable, Paris time
12:10FI 544 from Reykjavík at the gate
06:55U2 4501 to Nice leaves the gate
18 h 45 apart on the timetable, overnight
U2 4501 leaves 18 h 45 after FI 544 arrives on the timetable: more than half a day, so not a connection we count.