IB 2602 then QR 3637 at Barcelona
Buenos Aires → Barcelona → Rome
Timetable, Barcelona time
05:30IB 2602 from Buenos Aires at the gatealso LL 2602
18:25QR 3637 to Rome leaves the gatealso IB 5768, LL 5768
12 h 55 apart on the timetable
QR 3637 leaves 12 h 55 after IB 2602 arrives on the timetable: more than half a day, so not a connection we count.