UA 1591 then UA 152 at LAX
Baltimore → Los Angeles → Hong Kong
Timetable, Los Angeles time
11:24UA 1591 from Baltimore at the gate
11:10UA 152 to Hong Kong leaves the gate
23 h 46 apart on the timetable, overnight
UA 152 leaves 23 h 46 after UA 1591 arrives on the timetable: more than half a day, so not a connection we count.