FR 879 then FR 3140 at Barcelona
Venezia → Barcelona → Luxembourg
Timetable, Barcelona time
07:50FR 879 from Venezia at the gate
06:25FR 3140 to Luxembourg leaves the gate
22 h 35 apart on the timetable, overnight
FR 3140 leaves 22 h 35 after FR 879 arrives on the timetable: more than half a day, so not a connection we count.