TP 1921 then EC 7673 at Lisbon
Porto → Lisbon → Boa Vista
Timetable, Lisbon time
09:30TP 1921 from Porto at the gate
06:40EC 7673 to Boa Vista leaves the gate
21 h 10 apart on the timetable, overnight
EC 7673 leaves 21 h 10 after TP 1921 arrives on the timetable: more than half a day, so not a connection we count.