LS 959 then FR 3766 at Vienna
Manchester → Vienna → Sofia
Timetable, Vienna time
18:55LS 959 from Manchester at the gate
13:05FR 3766 to Sofia leaves the gate
18 h 10 apart on the timetable, overnight
FR 3766 leaves 18 h 10 after LS 959 arrives on the timetable: more than half a day, so not a connection we count.