FR 4586 then LA 5810 at Barcelona
Porto → Barcelona → Bologna
Timetable, Barcelona time
19:45FR 4586 from Porto at the gate
11:50LA 5810 to Bologna leaves the gate
16 h 05 apart on the timetable, overnight
LA 5810 leaves 16 h 05 after FR 4586 arrives on the timetable: more than half a day, so not a connection we count.