AC 4155 then AV 2354 at San Francisco
Tucson → San Francisco → Denver
Timetable, San Francisco time
11:06AC 4155 from Tucson at the gatealso UA 4683, EK 6410, LH 9293, NZ 9744
05:00AV 2354 to Denver leaves the gate
17 h 54 apart on the timetable, overnight
AV 2354 leaves 17 h 54 after AC 4155 arrives on the timetable: more than half a day, so not a connection we count.