IB 5437 then QR 3518 at Barcelona
Paris Orly → Barcelona → Bilbao
Timetable, Barcelona time
14:25IB 5437 from Paris Orly at the gatealso LL 5437, QR 5538, VY 8011
13:25QR 3518 to Bilbao leaves the gate
23 h apart on the timetable, overnight
QR 3518 leaves 23 h after IB 5437 arrives on the timetable: more than half a day, so not a connection we count.