UA 3926 then AC 4432 at San Francisco
Newark → San Francisco → Tucson
Timetable, San Francisco time
22:56UA 3926 from Newark at the gate
18:47AC 4432 to Tucson leaves the gatealso UA 5688, EK 6388, LH 9398, NZ 9747
19 h 51 apart on the timetable, overnight
AC 4432 leaves 19 h 51 after UA 3926 arrives on the timetable: more than half a day, so not a connection we count.