FR 651 then FR 1958 at Dublin
Lisbon → Dublin → Nice
Timetable, Dublin time
23:40FR 651 from Lisbon at the gate
16:30FR 1958 to Nice leaves the gate
16 h 50 apart on the timetable, overnight
FR 1958 leaves 16 h 50 after FR 651 arrives on the timetable: more than half a day, so not a connection we count.