TU 744 then UA 59 at Frankfurt
Tunis → Frankfurt am Main → San Francisco
Timetable, Frankfurt am Main time
17:25TU 744 from Tunis at the gate
13:30UA 59 to San Francisco leaves the gate
20 h 05 apart on the timetable, overnight
UA 59 leaves 20 h 05 after TU 744 arrives on the timetable: more than half a day, so not a connection we count.