UA 2417 then BR 643 at O'Hare
Houston → Chicago → Anchorage
Timetable, Chicago time
14:51UA 2417 from Houston at the gate
14:50BR 643 to Anchorage leaves the gate
23 h 59 apart on the timetable, overnight
BR 643 leaves 23 h 59 after UA 2417 arrives on the timetable: more than half a day, so not a connection we count.