FR 374 then FR 5021 at Dublin
London Luton → Dublin → Pisa
Timetable, Dublin time
10:50FR 374 from London Luton at the gate
06:35FR 5021 to Pisa leaves the gate
19 h 45 apart on the timetable, overnight
FR 5021 leaves 19 h 45 after FR 374 arrives on the timetable: more than half a day, so not a connection we count.