UA 356 then DL 1056 at Atlanta
Chicago O'Hare → Atlanta → Indianapolis
Timetable, Atlanta time
17:38UA 356 from Chicago O'Hare at the gate
17:22DL 1056 to Indianapolis leaves the gate
23 h 44 apart on the timetable, overnight
DL 1056 leaves 23 h 44 after UA 356 arrives on the timetable: more than half a day, so not a connection we count.