TP 1921 then EC 7681 at Lisbon
Porto → Lisbon → Barcelona
Timetable, Lisbon time
09:30TP 1921 from Porto at the gate
06:25EC 7681 to Barcelona leaves the gate
20 h 55 apart on the timetable, overnight
EC 7681 leaves 20 h 55 after TP 1921 arrives on the timetable: more than half a day, so not a connection we count.