Roof structure - dormer - difference?

Hello!
We have decided to use the roof with the new construction of our house. For this, we wanted to have a dormer with two roof windows on the back of the house. However, the plan provided that the rear house wall would be extended upward and the two windows would be installed in it. So it would not be a "dormer" in the usual sense, as it does not protrude from the roof. The house wall is therefore higher on the back than on the front.
I hope I was able to make myself understood.

Now the building authority rejects this project because it is not a dormer, but a pure roof construction or an extension which would trigger setback requirements.

I know what setback requirements are, etc., but it would be nice if someone could explain the difference to me as a layman.

Whether the windows are set back half a meter into the roof or aligned with the house wall... what is really so different to consider?

Thank you very much!

Regards

Hello, just read the corresponding definition in your state building code,

Setback areas are measured differently in front of rising walls than in front of roofs. For roofs, an additional setback area is calculated for the roof overhang. However, this can vary from state to state. The only uniform thing is that a wall is simply not a roof and consequently a different measurement is specified.

Best regards

The question almost forces itself on me, who is planning there? Such a thing a planner must surely know. Besides, you can simply "circumvent" something like that,...