That approach was needed to win over the non-Chalcedonians since they already believed that Christ has a single nature and so necessarily believed that he holds a single will. However, it was unclear whether the Chalcedonians should believe in Christ's human and divine energy and/or will as well as his human and divine nature because the ecumenical councils had made no ruling on that subject. A ruling for the new doctrine would provide common ground for the non-Chalcedonians and the Chalcedonians to come together, as the non-Chalcedonians could agree that Jesus has two natures if he has only one will, and some Chalcedonians could agree that Jesus has one will if he has two natures.
That approach was needed to win over the non-Chalcedonians since they already believed that Christ has a single nature and so necessarily believed that he holds a single will However it was unclear whether the Chalcedonians should believe in Christ's human and divine energy and/or will as well as his human and divine nature because the ecumenical councils had made no ruling on that subject A ruling for the new doctrine would provide common ground for the non-Chalcedonians and the Chalcedonians to come together as the non-Chalcedonians could agree that Jesus has two natures if he has only one will and some Chalcedonians could agree that Jesus has one will if he has two natures