H7 421 then TK 1855 at Istanbul
Chişinău → Istanbul → Barcelona
Timetable, Istanbul time
16:10H7 421 from Chişinău at the gate
15:30TK 1855 to Barcelona leaves the gate
23 h 20 apart on the timetable, overnight
TK 1855 leaves 23 h 20 after H7 421 arrives on the timetable: more than half a day, so not a connection we count.