929: The Fatimids encroach on the Emirate of Cordoba, claiming authority over the Emirate because of the Fatimid Caliph's control of Mecca and Medina. IOTL Abd-ar-Rahmna III claimed the title of Caliph in response to this. But let's say in this time the Fatimids are stronger and that strength impresses Adb-ar-Rahmna III. Or for whatever reason, he does not claim the title of Caliph.
By 930, Fatimid authority stretches from Tunisia to Morocco in Africa, and throughout much of Iberia.
What would happen next ITTL? Would the Fatimids still expand into Egypt? If they did, might the strength from Al-Andalus make them more successful in fighting the Abbasids? What effects on the Reconquista would this have?