FR 1645 then TK 1866 at Fiumicino
Vienna → Rome → Istanbul
Timetable, Rome time
19:10FR 1645 from Vienna at the gate
14:50TK 1866 to Istanbul leaves the gate
19 h 40 apart on the timetable, overnight
TK 1866 leaves 19 h 40 after FR 1645 arrives on the timetable: more than half a day, so not a connection we count.