IB 5437 then QR 3573 at Barcelona
Paris Orly → Barcelona → Cagliari
Timetable, Barcelona time
14:25IB 5437 from Paris Orly at the gatealso LL 5437, QR 5538, VY 8011
11:05QR 3573 to Cagliari leaves the gatealso IB 5798, LL 5798, VY 6114
20 h 40 apart on the timetable, overnight
QR 3573 leaves 20 h 40 after IB 5437 arrives on the timetable: more than half a day, so not a connection we count.