TP 3961 then VY 6503 at Lisbon
Porto → Lisbon → Bilbao
Timetable, Lisbon time
13:55TP 3961 from Porto at the gate
13:50VY 6503 to Bilbao leaves the gate
23 h 55 apart on the timetable, overnight
VY 6503 leaves 23 h 55 after TP 3961 arrives on the timetable: more than half a day, so not a connection we count.