FR 756 then OS 667 at Vienna
Stockholm → Vienna → Warsaw
Timetable, Vienna time
21:15FR 756 from Stockholm at the gate
17:30OS 667 to Warsaw leaves the gate
20 h 15 apart on the timetable, overnight
OS 667 leaves 20 h 15 after FR 756 arrives on the timetable: more than half a day, so not a connection we count.