that is correct, it will lead to an entirely seperate fangame, and update when said other fangame is completed and released.
However that door will be the only means of accessing it.
Viewing post in CH6 DEVICE_FRIEND encounter (Normal route) comments
I think I figured out what caused that??
I'm not 100% sure because I never had that issue, and haven't been able to replicate it, but I've adjusted how it works so that there should be no way it doesn't work.
I guess we'll see in 1-2 days when I update it with a bunch of fixes to issues I saw in other people's uploads that I never encountered myself.