BA 1497 then BA 1346 at Heathrow
Glasgow → London → Saint Helier
Timetable, London time
07:35BA 1497 from Glasgow at the gate
06:15BA 1346 to Saint Helier leaves the gate
22 h 40 apart on the timetable, overnight
BA 1346 leaves 22 h 40 after BA 1497 arrives on the timetable: more than half a day, so not a connection we count.