FR 7329 then FR 340 at Dublin
Lisbon → Dublin → London Luton
Timetable, Dublin time
18:15FR 7329 from Lisbon at the gate
12:50FR 340 to London Luton leaves the gate
18 h 35 apart on the timetable, overnight
FR 340 leaves 18 h 35 after FR 7329 arrives on the timetable: more than half a day, so not a connection we count.