FR 4586 then FI 6405 at Barcelona
Porto → Barcelona → Lisbon
Timetable, Barcelona time
21:10FR 4586 from Porto at the gate
18:05FI 6405 to Lisbon leaves the gate
20 h 55 apart on the timetable, overnight
FI 6405 leaves 20 h 55 after FR 4586 arrives on the timetable: more than half a day, so not a connection we count.