FR 4596 then AC 2713 at Barcelona
Porto → Barcelona → Lisbon
Timetable, Barcelona time
10:55FR 4596 from Porto at the gate
06:45AC 2713 to Lisbon leaves the gatealso UA 6861, AD 7286, S4 8735
19 h 50 apart on the timetable, overnight
AC 2713 leaves 19 h 50 after FR 4596 arrives on the timetable: more than half a day, so not a connection we count.