FR 1644 then TK 1884 at Vienna
Rome → Vienna → Istanbul
Timetable, Vienna time
10:25FR 1644 from Rome at the gate
09:40TK 1884 to Istanbul leaves the gate
23 h 15 apart on the timetable, overnight
TK 1884 leaves 23 h 15 after FR 1644 arrives on the timetable: more than half a day, so not a connection we count.