JL 58 then AV 2354 at San Francisco
Tokyo Narita → San Francisco → Denver
Timetable, San Francisco time
09:55JL 58 from Tokyo Narita at the gatealso MH 4404, AS 7314, AA 8409
05:00AV 2354 to Denver leaves the gate
19 h 05 apart on the timetable, overnight
AV 2354 leaves 19 h 05 after JL 58 arrives on the timetable: more than half a day, so not a connection we count.