UA 2198 then CX 3171 at Houston
Los Angeles → Houston → Anchorage
Timetable, Houston time
20:38UA 2198 from Los Angeles at the gate
17:58CX 3171 to Anchorage leaves the gate
21 h 20 apart on the timetable, overnight
CX 3171 leaves 21 h 20 after UA 2198 arrives on the timetable: more than half a day, so not a connection we count.