CV 251 then AA 2036 at O'Hare
Anchorage → Chicago → Philadelphia
Timetable, Chicago time
19:00CV 251 from Anchorage at the gate
12:59AA 2036 to Philadelphia leaves the gate
17 h 59 apart on the timetable, overnight
AA 2036 leaves 17 h 59 after CV 251 arrives on the timetable: more than half a day, so not a connection we count.