QR 3751 then TK 6902 at Barcelona
Seville → Barcelona → Istanbul
Timetable, Barcelona time
11:50QR 3751 from Seville at the gate
00:50TK 6902 to Istanbul leaves the gate
13 h apart on the timetable, overnight
TK 6902 leaves 13 h after QR 3751 arrives on the timetable: more than half a day, so not a connection we count.