TK 6902 then TK 1851 at Istanbul
Barcelona → Istanbul → Barcelona
Timetable, Istanbul time
06:25TK 6902 from Barcelona at the gate
21:55TK 1851 to Barcelona leaves the gate
15 h 30 apart on the timetable
TK 1851 leaves 15 h 30 after TK 6902 arrives on the timetable: more than half a day, so not a connection we count.