EC 4427 then EC 7637 at Lisbon
Lyon → Lisbon → Nantes
Timetable, Lisbon time
17:10EC 4427 from Lyon at the gate
11:15EC 7637 to Nantes leaves the gate
18 h 05 apart on the timetable, overnight
EC 7637 leaves 18 h 05 after EC 4427 arrives on the timetable: more than half a day, so not a connection we count.