FR 509 then FR 1982 at Dublin
Bristol → Dublin → Biarritz
Timetable, Dublin time
20:10FR 509 from Bristol at the gate
12:40FR 1982 to Biarritz leaves the gate
16 h 30 apart on the timetable, overnight
FR 1982 leaves 16 h 30 after FR 509 arrives on the timetable: more than half a day, so not a connection we count.