QR 3546 then LA 5745 at Barcelona
Bilbao → Barcelona → Málaga
Timetable, Barcelona time
12:40QR 3546 from Bilbao at the gate
11:40LA 5745 to Málaga leaves the gate
23 h apart on the timetable, overnight
LA 5745 leaves 23 h after QR 3546 arrives on the timetable: more than half a day, so not a connection we count.