CV 251 then AA 4541 at O'Hare
Anchorage → Chicago → Indianapolis
Timetable, Chicago time
19:00CV 251 from Anchorage at the gate
12:38AA 4541 to Indianapolis leaves the gate
17 h 38 apart on the timetable, overnight
AA 4541 leaves 17 h 38 after CV 251 arrives on the timetable: more than half a day, so not a connection we count.