I think I see.
As for the footwork, where I train, that is called gyaku-hanmi, assuming the front foot is under the hand (i.e. right hand "attacking" = right foot forward).
So, after nage effects his wax-on with his left <attacked> hand, and uke moves in front of nage, I imagine nage then reaches down with his free right hand and grasps uke's right wrist, and as they bring uke's wrist up high and break the grip, move their left hand up under uke's right elbow, continuing on to complete ikkyo?