EC 7668 then FR 1798 at Lisbon
Luxembourg → Lisbon → Toulouse
Timetable, Lisbon time
13:20EC 7668 from Luxembourg at the gate
10:55FR 1798 to Toulouse leaves the gate
21 h 35 apart on the timetable, overnight
FR 1798 leaves 21 h 35 after EC 7668 arrives on the timetable: more than half a day, so not a connection we count.