Notice bolded text:
]So Finsky are you saying that you never disturb the bottom brood chamber?
I do but very seldom.
The Only movement of brood that you do is from the second chamber to the third...?
No. That help at all to avoid excluder. If frames are mostly full of honey, I lift them to topmost, which means to fourth or sixth, out of brood area. Bees fill emerged cells with nectar.
Did you mean when you add the fourth box or should the title of this section be "Third Box"?
When you have 3 or four box , it is same where are brood. The most important is to avoid swarming. When I put hives in nectar fields there should be 6-7 boxes. I put two weak hives together to get a big hive.
The result is that queen has 3 deep, topmost are capped honey frames and obove brood area tere are free combs for nectar. When queen has those three deeps, she has no need to rise higher.
If frame has both brood and honey and I want to extract honey I put frames up to the tower or beside the wall. So I isolate a frame that it do not invent queen to lay any more.