QR 3641 then MS 768 at Barcelona
Catania → Barcelona → Cairo
Timetable, Barcelona time
20:55QR 3641 from Catania at the gate
15:25MS 768 to Cairo leaves the gate
18 h 30 apart on the timetable, overnight
MS 768 leaves 18 h 30 after QR 3641 arrives on the timetable: more than half a day, so not a connection we count.