It's like learning a new route, by going back and forth over it for a while. It's the two parties getting together, and formally acknowledging that things are squared away again. It may not mean that things are back to where they were in the beginning. Forgiveness doesn't always mean that we can put things back together the way they were. The analogy I always like to use is that of physical healing.
Reconciliation is like being healed.
Sometimes there will be scars. We may have to bear those for the rest of our lives. Reconciliation is about healing wounds, and forming healthy scars, and learning to live again. That four-step reconciliation process can be blocked, anywhere along the way. It can be blocked, as I said, when people pretend that something didn't happen, or when they deny any responsibility for what they've done.