Whatever is addressed in a consultation shifts instantly. There could be a few layers of issues which add up to a back pain or a continued migraine for example.. depending on how long the client has “invested” in the project.
Each one of us is unique. Though two people might have a similar complaint of say, back pain for example, the path they have traveled to reach there could be very different and so the 2 sessions would be very different as well.
In that light, the time taken to resolve an issue would differ from person to person, issue to issue. Sometimes the client sees a sudden major shift, sometimes it is step by step; sometimes some other issue gets resolved as many things are interconnected. As the person becomes more and more aware, the changes are more obvious to him or her.