AI 81 then FR 1644 at Fiumicino
Mumbai → Rome → Vienna
Timetable, Rome time
04:46AI 81 from Mumbai at the gate
18:15FR 1644 to Vienna leaves the gate
13 h 29 apart on the timetable
FR 1644 leaves 13 h 29 after AI 81 arrives on the timetable: more than half a day, so not a connection we count.