FR 651 then FR 1984 at Dublin
Lisbon → Dublin → Carcassonne
Timetable, Dublin time
23:40FR 651 from Lisbon at the gate
16:05FR 1984 to Carcassonne leaves the gate
16 h 25 apart on the timetable, overnight
FR 1984 leaves 16 h 25 after FR 651 arrives on the timetable: more than half a day, so not a connection we count.