Prepare the loaf pan. Spray or wipe a small amount of oil on the surface, then cover with cling film.
Place the first banana loaf layer at the bottom of the pan, moistened with coffee syrup. Evenly spread 1/3 of chocolate ganache on top.
Place the second layer of banana loaf, moistened with coffee syrup, and spread the other third of the chocolate ganache.
Place the 3rd layer of banana loaf, moistened with coffee syrup, then spread the remaining chocolate ganache.
Place the final layer of the banana loaf, moisten it with the coffee syrup, then press to flatten the surface.
Freeze for at least 3 hours.