We all know the histories of the "miraculous" battle of guadalete, where the wesigaut kingdom defeated the invading umayyad army against all odds and killed Ṭāriq ibn Ziyad, at the costs of almost all his forces and a arm
The question if, what if the gauts lost the battle as (almost) happened? How much could they advance in hispania before being pushed back? If the islamic invasion did had some success, could this rally all the vassals of Roderic behind him again and prevent the civil war that almost destroyed the wisigaut kingdom?