FR 776 then FR 3140 at Barcelona
Venezia → Barcelona → Luxembourg
Timetable, Barcelona time
14:55FR 776 from Venezia at the gate
06:25FR 3140 to Luxembourg leaves the gate
15 h 30 apart on the timetable, overnight
FR 3140 leaves 15 h 30 after FR 776 arrives on the timetable: more than half a day, so not a connection we count.