FR 203 then FR 1958 at Dublin
London Stansted → Dublin → Nice
Timetable, Dublin time
20:00FR 203 from London Stansted at the gate
16:40FR 1958 to Nice leaves the gate
20 h 40 apart on the timetable, overnight
FR 1958 leaves 20 h 40 after FR 203 arrives on the timetable: more than half a day, so not a connection we count.