IB 2375 then QR 3573 at Barcelona
Pamplona → Barcelona → Cagliari
Timetable, Barcelona time
12:00IB 2375 from Pamplona at the gate
11:05QR 3573 to Cagliari leaves the gatealso IB 5798, LL 5798, VY 6114
23 h 05 apart on the timetable, overnight
QR 3573 leaves 23 h 05 after IB 2375 arrives on the timetable: more than half a day, so not a connection we count.