EW 7520 then IB 5414 at Barcelona
Hamburg → Barcelona → London Gatwick
Timetable, Barcelona time
18:45EW 7520 from Hamburg at the gate
14:55IB 5414 to London Gatwick leaves the gatealso LL 5414, VY 7618
20 h 10 apart on the timetable, overnight
IB 5414 leaves 20 h 10 after EW 7520 arrives on the timetable: more than half a day, so not a connection we count.