FR 199 then FR 731 at Vienna
Vilnius → Vienna → London Stansted
Timetable, Vienna time
13:35FR 199 from Vilnius at the gate
09:45FR 731 to London Stansted leaves the gate
20 h 10 apart on the timetable, overnight
FR 731 leaves 20 h 10 after FR 199 arrives on the timetable: more than half a day, so not a connection we count.