FR 5020 then FR 142 at Dublin
Pisa → Dublin → London Gatwick
Timetable, Dublin time
15:40FR 5020 from Pisa at the gate
11:20FR 142 to London Gatwick leaves the gate
19 h 40 apart on the timetable, overnight
FR 142 leaves 19 h 40 after FR 5020 arrives on the timetable: more than half a day, so not a connection we count.