QR 3579 then IB 5338 at Barcelona
Seville → Barcelona → Rome
Timetable, Barcelona time
15:50QR 3579 from Seville at the gate
11:35IB 5338 to Rome leaves the gatealso LL 5338
19 h 45 apart on the timetable, overnight
IB 5338 leaves 19 h 45 after QR 3579 arrives on the timetable: more than half a day, so not a connection we count.