AA 40 then EW 7521 at Barcelona
Chicago → Barcelona → Hamburg
Timetable, Barcelona time
09:35AA 40 from Chicago at the gate
09:20EW 7521 to Hamburg leaves the gate
23 h 45 apart on the timetable, overnight
EW 7521 leaves 23 h 45 after AA 40 arrives on the timetable: more than half a day, so not a connection we count.