CV 251 then AA 2603 at O'Hare
Anchorage → Chicago → Houston
Timetable, Chicago time
19:00CV 251 from Anchorage at the gate
07:21AA 2603 to Houston leaves the gate
12 h 21 apart on the timetable, overnight
AA 2603 leaves 12 h 21 after CV 251 arrives on the timetable: more than half a day, so not a connection we count.