FR 5020 then FR 122 at Dublin
Pisa → Dublin → London Gatwick
Timetable, Dublin time
15:40FR 5020 from Pisa at the gate
12:35FR 122 to London Gatwick leaves the gate
20 h 55 apart on the timetable, overnight
FR 122 leaves 20 h 55 after FR 5020 arrives on the timetable: more than half a day, so not a connection we count.