FR 651 then FR 373 at Dublin
Lisbon → Dublin → London Luton
Timetable, Dublin time
12:25FR 651 from Lisbon at the gate
11:15FR 373 to London Luton leaves the gate
22 h 50 apart on the timetable, overnight
FR 373 leaves 22 h 50 after FR 651 arrives on the timetable: more than half a day, so not a connection we count.