JU 312 then FR 182 at Vienna
Belgrade → Vienna → Sofia
Timetable, Vienna time
14:30JU 312 from Belgrade at the gate
11:40FR 182 to Sofia leaves the gate
21 h 10 apart on the timetable, overnight
FR 182 leaves 21 h 10 after JU 312 arrives on the timetable: more than half a day, so not a connection we count.