QR 3722 then LL 5488 at Barcelona
Firenze → Barcelona → Zurich
Timetable, Barcelona time
23:50QR 3722 from Firenze at the gate
18:40LL 5488 to Zurich leaves the gate
18 h 50 apart on the timetable, overnight
LL 5488 leaves 18 h 50 after QR 3722 arrives on the timetable: more than half a day, so not a connection we count.