CV 251 then AA 2645 at O'Hare
Anchorage → Chicago → Houston
Timetable, Chicago time
19:00CV 251 from Anchorage at the gate
10:35AA 2645 to Houston leaves the gate
15 h 35 apart on the timetable, overnight
AA 2645 leaves 15 h 35 after CV 251 arrives on the timetable: more than half a day, so not a connection we count.