BJ 246 then EN 252 at Frankfurt
Tunis → Frankfurt am Main → Milan
Timetable, Frankfurt am Main time
17:05BJ 246 from Tunis at the gate
16:40EN 252 to Milan leaves the gate
23 h 35 apart on the timetable, overnight
EN 252 leaves 23 h 35 after BJ 246 arrives on the timetable: more than half a day, so not a connection we count.