BA 1347 then BA 812 at Heathrow
Saint Helier → London → Copenhagen
Timetable, London time
11:45BA 1347 from Saint Helier at the gate
11:35BA 812 to Copenhagen leaves the gate
23 h 50 apart on the timetable, overnight
BA 812 leaves 23 h 50 after BA 1347 arrives on the timetable: more than half a day, so not a connection we count.