DL 1147 then DL 2745 at Atlanta
Chicago O'Hare → Atlanta → Valparaiso
Timetable, Atlanta time
14:29DL 1147 from Chicago O'Hare at the gate
02:32DL 2745 to Valparaiso leaves the gate
12 h 03 apart on the timetable, overnight
DL 2745 leaves 12 h 03 after DL 1147 arrives on the timetable: more than half a day, so not a connection we count.