IB 5409 then EW 7521 at Barcelona
London Gatwick → Barcelona → Hamburg
Timetable, Barcelona time
18:30IB 5409 from London Gatwick at the gatealso LL 5409, VY 7613
10:10EW 7521 to Hamburg leaves the gate
15 h 40 apart on the timetable, overnight
EW 7521 leaves 15 h 40 after IB 5409 arrives on the timetable: more than half a day, so not a connection we count.