FR 341 then FR 652 at Dublin
London Luton → Dublin → Lisbon
Timetable, Dublin time
21:25FR 341 from London Luton at the gate
17:35FR 652 to Lisbon leaves the gate
20 h 10 apart on the timetable, overnight
FR 652 leaves 20 h 10 after FR 341 arrives on the timetable: more than half a day, so not a connection we count.