3O 377 then TK 1856 at Barcelona
Tangier → Barcelona → Istanbul
Timetable, Barcelona time
18:553O 377 from Tangier at the gate
18:20TK 1856 to Istanbul leaves the gate
23 h 25 apart on the timetable, overnight
TK 1856 leaves 23 h 25 after 3O 377 arrives on the timetable: more than half a day, so not a connection we count.