BA 1349 then AA 87 at Heathrow
Saint Helier → London → Chicago
Timetable, London time
16:20BA 1349 from Saint Helier at the gate
12:35AA 87 to Chicago leaves the gate
20 h 15 apart on the timetable, overnight
AA 87 leaves 20 h 15 after BA 1349 arrives on the timetable: more than half a day, so not a connection we count.