BA 1347 then BA 874 at Heathrow
Saint Helier → London → Bucharest
Timetable, London time
11:45BA 1347 from Saint Helier at the gate
09:50BA 874 to Bucharest leaves the gate
22 h 05 apart on the timetable, overnight
BA 874 leaves 22 h 05 after BA 1347 arrives on the timetable: more than half a day, so not a connection we count.