AA 1162 then B6 1187 at Boston
Chicago O'Hare → Boston → Los Angeles
Timetable, Boston time
19:33AA 1162 from Chicago O'Hare at the gate
15:45B6 1187 to Los Angeles leaves the gate
20 h 12 apart on the timetable, overnight
B6 1187 leaves 20 h 12 after AA 1162 arrives on the timetable: more than half a day, so not a connection we count.