EW 7520 then MU 250 at Barcelona
Hamburg → Barcelona → Shanghai
Timetable, Barcelona time
18:45EW 7520 from Hamburg at the gate
10:20MU 250 to Shanghai leaves the gate
15 h 35 apart on the timetable, overnight
MU 250 leaves 15 h 35 after EW 7520 arrives on the timetable: more than half a day, so not a connection we count.