EW 7520 then IB 5410 at Barcelona
Hamburg → Barcelona → London Gatwick
Timetable, Barcelona time
18:45EW 7520 from Hamburg at the gate
13:55IB 5410 to London Gatwick leaves the gatealso LL 5410, VY 7614
19 h 10 apart on the timetable, overnight
IB 5410 leaves 19 h 10 after EW 7520 arrives on the timetable: more than half a day, so not a connection we count.