IB 5129 then LA 5771 at Barcelona
Alicante → Barcelona → Rome
Timetable, Barcelona time
08:05IB 5129 from Alicante at the gate
07:10LA 5771 to Rome leaves the gate
23 h 05 apart on the timetable, overnight
LA 5771 leaves 23 h 05 after IB 5129 arrives on the timetable: more than half a day, so not a connection we count.