Question: What did Synods at Milan, Avignon, Liege, Cologne, and elsewhere do?
Sentence: Nevertheless, although a distinction between lawful and unlawful hunting is undoubtedly permissible, it is certain that a bishop can absolutely prohibit all hunting to the clerics of his diocese, as was done by synods at Milan, Avignon, Liège, Cologne, and elsewhere.
Answer in sentence: yes