FR 7350 then W9 5378 at Barcelona
Vienna → Barcelona → London Luton
Timetable, Barcelona time
19:35FR 7350 from Vienna at the gate
16:10W9 5378 to London Luton leaves the gate
20 h 35 apart on the timetable, overnight
W9 5378 leaves 20 h 35 after FR 7350 arrives on the timetable: more than half a day, so not a connection we count.