EC 7668 then TP 876 at Lisbon
Luxembourg → Lisbon → Florence
Timetable, Lisbon time
21:55EC 7668 from Luxembourg at the gate
14:30TP 876 to Florence leaves the gate
16 h 35 apart on the timetable, overnight
TP 876 leaves 16 h 35 after EC 7668 arrives on the timetable: more than half a day, so not a connection we count.