EC 3749 then QR 3509 at Barcelona
Milan → Barcelona → Gran Canaria
Timetable, Barcelona time
21:30EC 3749 from Milan at the gate
17:20QR 3509 to Gran Canaria leaves the gate
19 h 50 apart on the timetable, overnight
QR 3509 leaves 19 h 50 after EC 3749 arrives on the timetable: more than half a day, so not a connection we count.