QR 3579 then QR 3635 at Barcelona
Seville → Barcelona → Rome
Timetable, Barcelona time
15:35QR 3579 from Seville at the gate
10:05QR 3635 to Rome leaves the gatealso IB 5336, LL 5336
18 h 30 apart on the timetable, overnight
QR 3635 leaves 18 h 30 after QR 3579 arrives on the timetable: more than half a day, so not a connection we count.