TU 744 then UA 47 at Frankfurt
Tunis → Frankfurt am Main → Houston
Timetable, Frankfurt am Main time
17:25TU 744 from Tunis at the gate
13:50UA 47 to Houston leaves the gate
20 h 25 apart on the timetable, overnight
UA 47 leaves 20 h 25 after TU 744 arrives on the timetable: more than half a day, so not a connection we count.