FR 31 then FR 1982 at Dublin
London Stansted → Dublin → Biarritz
Timetable, Dublin time
13:10FR 31 from London Stansted at the gate
12:40FR 1982 to Biarritz leaves the gate
23 h 30 apart on the timetable, overnight
FR 1982 leaves 23 h 30 after FR 31 arrives on the timetable: more than half a day, so not a connection we count.