IB 5803 then SN 3704 at Barcelona
Catania → Barcelona → Brussels
Timetable, Barcelona time
20:55IB 5803 from Catania at the gatealso LL 5803, VY 6119
17:40SN 3704 to Brussels leaves the gate
20 h 45 apart on the timetable, overnight
SN 3704 leaves 20 h 45 after IB 5803 arrives on the timetable: more than half a day, so not a connection we count.