UA 2377 then CX 3171 at Houston
Los Angeles → Houston → Anchorage
Timetable, Houston time
21:55UA 2377 from Los Angeles at the gate
17:58CX 3171 to Anchorage leaves the gate
20 h 03 apart on the timetable, overnight
CX 3171 leaves 20 h 03 after UA 2377 arrives on the timetable: more than half a day, so not a connection we count.