FR 776 then TK 1854 at Barcelona
Venezia → Barcelona → Istanbul
Timetable, Barcelona time
13:15FR 776 from Venezia at the gate
12:20TK 1854 to Istanbul leaves the gate
23 h 05 apart on the timetable, overnight
TK 1854 leaves 23 h 05 after FR 776 arrives on the timetable: more than half a day, so not a connection we count.