FR 5061 then FR 332 at Dublin
Cagliari → Dublin → London Luton
Timetable, Dublin time
12:55FR 5061 from Cagliari at the gate
09:20FR 332 to London Luton leaves the gate
20 h 25 apart on the timetable, overnight
FR 332 leaves 20 h 25 after FR 5061 arrives on the timetable: more than half a day, so not a connection we count.