UA 6047 then AA 6469 at O'Hare
Pittsburgh → Chicago → South Bend
Timetable, Chicago time
19:00UA 6047 from Pittsburgh at the gate
18:53AA 6469 to South Bend leaves the gate
23 h 53 apart on the timetable, overnight
AA 6469 leaves 23 h 53 after UA 6047 arrives on the timetable: more than half a day, so not a connection we count.