We can agree to disagree but since you honestly have pissed me off about this in the past and still refuse to acknowledge that the explanation is at least possible I must prove my point since you insist on being so specific.

Below are the quotes directly taken from KQ6.
Narrator when first entering Mainhall dressed as servant :From the open door comes the clatter of pots and pans, yelled instructions, and other busy kitchen noises.
This description clearly works in a scenario where the kitchen door is open or that they are using the hallway as staging ground. The sound could easily travel such a short distance from the kitchen, through the hallway to the doorway. Plus servants who are preparing plates and food for the wedding in the hallway would also be making additional noise.
The waiter says this to you when he sees you :You! Girl! Don't just stand there! There's a stack of silver almost to the ceiling that needs polishing for the wedding! Get a move on!
There is nothing there specific about the the silver being in the kitchen, it could be in the hallway if once again its a staging ground. Even if its in the kitchen, nothing says its immediately behind the door, just close by in that general direction.
Look at Door :There's a door on the west wall, under the stairs. It's the door the waiter came through, and probably leads to the kitchen
This is the message you get when clicking eye on door both before and after you go through it. The important words here are "LEAD" and "PROBABLY".
Lead implies that it might not directly go there but allow you to eventually get there by going through the door.
Probably just implies even more that what's right behind the door may not be the kitchen.
Hand on Door :Alexander decides to check out the door the waiter came through.
This line tells us nothing specific about whats behind the door.
No lunch is being served today! We're busy catering the wedding!
Though this implies you are heading in the general area of the kitchen, nothing in this statement says that you are directly inside it. If the hallway is the staging ground then there would be servants and maybe even an angry wedding planner or cook that would assume you are here for that and tell you to leave.
Apparently, the kitchen is no place to be today.
This is the final statement when Alex returns from the doorway. It also does not directly say that he was in the kitchen, but simply that the kitchen itself is busy and not somewhere you want to be. Also it is not uncommon for such a statement to imply not only the room that is the kitchen but whatever nearby area is also being used in the preparation of the meal.
Going back into the doorway gives me the same results, even multiple times. Are there additional dialogs I am not aware of. The eye message does not change either.
This is all through the short route. As I recall you cannot go top side in the long route because if you do when the wedding starts you automatically walk to the throne room door, and if you go before you simply get caught which is why you need to use the secret passage.
P.S. I did notice 1 glaring mistake we made about the kitchen/hallway door. We put the door nob on the left and hinges on the right when it should have been the opposite. As such the door pivots on the wrong side.
Oh well, you can't get everything right I guess
