KL 749 then TK 1956 at Schiphol
Cartagena → Amsterdam → Istanbul
Timetable, Amsterdam time
10:45KL 749 from Cartagena at the gate
23:10TK 1956 to Istanbul leaves the gate
12 h 25 apart on the timetable
TK 1956 leaves 12 h 25 after KL 749 arrives on the timetable: more than half a day, so not a connection we count.