IB 5803 then IB 416 at Barcelona
Catania → Barcelona → Madrid
Timetable, Barcelona time
20:55IB 5803 from Catania at the gatealso LL 5803, VY 6119
17:00IB 416 to Madrid leaves the gatealso IB 416S, LL 3016, VY 5068, QR 6587, BA 7083, CZ 7325, AA 8732
20 h 05 apart on the timetable, overnight
IB 416 leaves 20 h 05 after IB 5803 arrives on the timetable: more than half a day, so not a connection we count.