FR 3929 then FR 3140 at Barcelona
Trieste → Barcelona → Luxembourg
Timetable, Barcelona time
10:50FR 3929 from Trieste at the gate
06:25FR 3140 to Luxembourg leaves the gate
19 h 35 apart on the timetable, overnight
FR 3140 leaves 19 h 35 after FR 3929 arrives on the timetable: more than half a day, so not a connection we count.