TP 234 then FR 1791 at Lisbon
Washington → Lisbon → Luxembourg
Timetable, Lisbon time
10:40TP 234 from Washington at the gate
06:45FR 1791 to Luxembourg leaves the gate
20 h 05 apart on the timetable, overnight
FR 1791 leaves 20 h 05 after TP 234 arrives on the timetable: more than half a day, so not a connection we count.