The Council of Chalcedon affirmed that Leo’s Tome to Flavian of Constantinople was in harmony with the creeds of Nicaea and Constantinople and the conciliar letters of Cyril – but not without controversy. Some bishops criticized three passages in the Tome for emphasizing the duality of natures in Christ, which seemed to them to come alarmingly close to the “Nestorian” tendency to divide the natures in Christ so much that they acted and experienced independently of each other. These objections were eventually resolved at Chalcedon, enabling the bishops to acclaim the Tome as a definition of orthodoxy and to commend it in the Definition of Faith they produced as a “confirmation of right doctrines.” But those opposed to the decisions of Chalcedon continued to regard Leo’s Tome to Flavian as tainted by “Nestorianism.”