FR 4546 then LA 5810 at Barcelona
Porto → Barcelona → Bologna
Timetable, Barcelona time
23:25FR 4546 from Porto at the gate
11:50LA 5810 to Bologna leaves the gate
12 h 25 apart on the timetable, overnight
LA 5810 leaves 12 h 25 after FR 4546 arrives on the timetable: more than half a day, so not a connection we count.