UA 4717 then CA 988 at LAX
Phoenix Sky Harbor → Los Angeles → Beijing
Timetable, Los Angeles time
15:10UA 4717 from Phoenix Sky Harbor at the gate
13:20CA 988 to Beijing leaves the gate
22 h 10 apart on the timetable, overnight
CA 988 leaves 22 h 10 after UA 4717 arrives on the timetable: more than half a day, so not a connection we count.