EC 7618 then DJ 6645 at Lisbon
Nice → Lisbon → Porto
Timetable, Lisbon time
22:55EC 7618 from Nice at the gate
19:07DJ 6645 to Porto leaves the gate
20 h 12 apart on the timetable, overnight
DJ 6645 leaves 20 h 12 after EC 7618 arrives on the timetable: more than half a day, so not a connection we count.