FR 1983 then FR 664 at Dublin
Biarritz → Dublin → Birmingham (UK)
Timetable, Dublin time
17:20FR 1983 from Biarritz at the gate
12:20FR 664 to Birmingham (UK) leaves the gate
19 h apart on the timetable, overnight
FR 664 leaves 19 h after FR 1983 arrives on the timetable: more than half a day, so not a connection we count.