TK 1855 then QR 3619 at Barcelona
Istanbul → Barcelona → Cagliari
Timetable, Barcelona time
17:15TK 1855 from Istanbul at the gate
07:15QR 3619 to Cagliari leaves the gate
14 h apart on the timetable, overnight
QR 3619 leaves 14 h after TK 1855 arrives on the timetable: more than half a day, so not a connection we count.