Home App "hub not responding" Notification

I recently bought an Apple TV 4K and set it up as a home hub for my holiday home. I want to be able to receive notifications when the hub is not reachable, as seen in the picture below. I intend to do this so I am aware of any unexpected power outages while I'm not home. I have tried cutting out the power from my router, my apple tv or both at the same time, expecting to get a notification, but I never got one.

Yes, software is up to date on all of my devices and notifications settings for the home app are turned on.

So far I've tried reconfiguring the Home entirely, resetting the TV, resetting my iPhone network settings with no luck.

Am I doing something wrong or am I misunderstanding the way these notifications are supposed to be sent?