LL 5054 then LA 5765 at Barcelona
Hondarribia → Barcelona → Firenze
Timetable, Barcelona time
15:10LL 5054 from Hondarribia at the gate
12:45LA 5765 to Firenze leaves the gate
21 h 35 apart on the timetable, overnight
LA 5765 leaves 21 h 35 after LL 5054 arrives on the timetable: more than half a day, so not a connection we count.