QR 3579 then IB 408 at Barcelona
Seville → Barcelona → Madrid
Timetable, Barcelona time
15:50QR 3579 from Seville at the gate
10:35IB 408 to Madrid leaves the gatealso IB 408S, LA 1517, CX 1824, LL 3031, VY 5056, AV 6017, BA 7080, AA 8725
18 h 45 apart on the timetable, overnight
IB 408 leaves 18 h 45 after QR 3579 arrives on the timetable: more than half a day, so not a connection we count.