AA 3113 then B6 615 at JFK
Chicago O'Hare → New York → San Francisco
Timetable, New York time
18:00AA 3113 from Chicago O'Hare at the gate
17:55B6 615 to San Francisco leaves the gate
23 h 55 apart on the timetable, overnight
B6 615 leaves 23 h 55 after AA 3113 arrives on the timetable: more than half a day, so not a connection we count.