FR 1799 then DJ 6645 at Lisbon
Toulouse → Lisbon → Porto
Timetable, Lisbon time
23:55FR 1799 from Toulouse at the gate
19:48DJ 6645 to Porto leaves the gate
19 h 53 apart on the timetable, overnight
DJ 6645 leaves 19 h 53 after FR 1799 arrives on the timetable: more than half a day, so not a connection we count.