every thing it's possible but;
- flissa it's a sword of Berbers from mountains of Kabylia, located in North of Algeria
- distances between Kabylia and Mali/Niger/Chad ... several thousands km
- in between, one of the largest worldwide desert
- Chad/Mali have their typically swords without similarity with flissa
taking in consideration; difference of ethnic, difference of language, remote locations,
made that theory could be aleatory

but ... it's just a point of view, not "the truth"