EC 7655 then QR 4704 at Barcelona
Lisbon → Barcelona → Porto
Timetable, Barcelona time
09:20EC 7655 from Lisbon at the gate
08:35QR 4704 to Porto leaves the gate
23 h 15 apart on the timetable, overnight
QR 4704 leaves 23 h 15 after EC 7655 arrives on the timetable: more than half a day, so not a connection we count.