They say that in the 8th-10th centuries, European Catholics more often went to study in the Pyrenees than in Byzantium. Is this true?

The Franks did not trust the Byzantines – the split of the churches and peoples of Western and Eastern Europe had practically taken place. On the contrary, there was religious tolerance in the Islamic universities of Andalusia; most of the professors were Jews, and among the students there were many Catholics. Here one could study all Hellenic sciences and many Arab discoveries, especially in chemistry and medicine.