BJ 246 then EN 314 at Frankfurt
Tunis → Frankfurt am Main → Firenze
Timetable, Frankfurt am Main time
17:05BJ 246 from Tunis at the gate
12:05EN 314 to Firenze leaves the gate
19 h apart on the timetable, overnight
EN 314 leaves 19 h after BJ 246 arrives on the timetable: more than half a day, so not a connection we count.