BA 297 then UA 5940 at O'Hare
London → Chicago → Peoria
Timetable, Chicago time
18:45BA 297 from London at the gate
16:40UA 5940 to Peoria leaves the gate
21 h 55 apart on the timetable, overnight
UA 5940 leaves 21 h 55 after BA 297 arrives on the timetable: more than half a day, so not a connection we count.