Let's say you were 200lbs, and you increased your calories which allowed you to bulk up to 230lbs, but in the meantime you also went from 10% bodyfat to 17% bodyfat during that phase.
Now you just stay at those same calories that got you to 230lbs and continue to train hard on your lifts. You do this for a 18 months. What happens?
Your weight will not change from 230lbs because you're eating the same number of calories every day. But what happens to your bodyfat percentage? Does it stay the same? Or slowly decrease throughout that 18 month period so you're at a new 'set-point' where you're something like 230lbs and 12% bodyfat?