BA 1349 then BA 223 at Heathrow
Saint Helier → London → Nashville
Timetable, London time
16:20BA 1349 from Saint Helier at the gate
13:10BA 223 to Nashville leaves the gate
20 h 50 apart on the timetable, overnight
BA 223 leaves 20 h 50 after BA 1349 arrives on the timetable: more than half a day, so not a connection we count.