IB 5803 then LA 5770 at Barcelona
Catania → Barcelona → Porto
Timetable, Barcelona time
20:55IB 5803 from Catania at the gatealso LL 5803, VY 6119
18:35LA 5770 to Porto leaves the gate
21 h 40 apart on the timetable, overnight
LA 5770 leaves 21 h 40 after IB 5803 arrives on the timetable: more than half a day, so not a connection we count.