FR 2494 then U2 2324 at Barcelona
Palma de Mallorca → Barcelona → London Luton
Timetable, Barcelona time
19:10FR 2494 from Palma de Mallorca at the gate
10:20U2 2324 to London Luton leaves the gate
15 h 10 apart on the timetable, overnight
U2 2324 leaves 15 h 10 after FR 2494 arrives on the timetable: more than half a day, so not a connection we count.