Comfort range is the pain-free part of the range, where all 📝Articular Mobility stays.
Work does not earn its keep by leaving that range. Stretchy, agreed-to sensation is not the same as sharp, shooting, or panicky pain — those stop the movement. Comfort range can grow over visits; forcing it to grow in one pass is not the method.
Clients can say "that's enough" at any point. That sentence is the work working.