EK 6107 then UA 837 at San Francisco
Houston → San Francisco → Tokyo Narita
Timetable, San Francisco time
10:46EK 6107 from Houston at the gatealso CA 7372
10:45UA 837 to Tokyo Narita leaves the gatealso NH 7013
23 h 59 apart on the timetable, overnight
UA 837 leaves 23 h 59 after EK 6107 arrives on the timetable: more than half a day, so not a connection we count.