I've heard of this method. It basically means once it's initiated the two don't interact with each other until both know/acknowledge that they both have moved on. I heard it's hard and extremely painful. While it happens it involves excommunication in absolute. No seeing them anywhere. No never being reminded of there presence because there not there. No signals and no nothing that reminds you of them. It's complete ghosting on each other. And all the memories you have of them play out and kill you until you go numb and can't feel anything.