QR 3579 then IB 5342 at Barcelona
Seville → Barcelona → Rome
Timetable, Barcelona time
15:50QR 3579 from Seville at the gate
14:40IB 5342 to Rome leaves the gatealso LL 5342
22 h 50 apart on the timetable, overnight
IB 5342 leaves 22 h 50 after QR 3579 arrives on the timetable: more than half a day, so not a connection we count.