FR 728 then OS 775 at Vienna
Faro → Vienna → Sofia
Timetable, Vienna time
18:25FR 728 from Faro at the gate
15:30OS 775 to Sofia leaves the gate
21 h 05 apart on the timetable, overnight
OS 775 leaves 21 h 05 after FR 728 arrives on the timetable: more than half a day, so not a connection we count.