IB 5857 then QR 142 at Barcelona
Manchester → Barcelona → Doha
Timetable, Barcelona time
23:10IB 5857 from Manchester at the gatealso LL 5857, VY 7757, BA 8107
22:15QR 142 to Doha leaves the gatealso LA 5615, IB 6144
23 h 05 apart on the timetable, overnight
QR 142 leaves 23 h 05 after IB 5857 arrives on the timetable: more than half a day, so not a connection we count.