KM 784 then TK 1855 at Istanbul
Valletta → Istanbul → Barcelona
Timetable, Istanbul time
21:45KM 784 from Valletta at the gate
15:30TK 1855 to Barcelona leaves the gate
17 h 45 apart on the timetable, overnight
TK 1855 leaves 17 h 45 after KM 784 arrives on the timetable: more than half a day, so not a connection we count.