Windows pushes update with no internet?

No internet needed for office documents and video editing. Or really any kind pf media editing. I kept a Copy of the iso when one was able to use rufus to bypass the internet requirement. That’s how. I have all the software I need for a long time so there is no need to connect to the internet. There’s not a static always on wifi in my apartment, just the hotspot. Which that hotspot has not been on in the past week. In fact, when I did all the updates I connected via usb cable rather than ever logging into with wifi. So unless it was a previous update from over a week ago that just decided to install now, it had to come from somewhere. I double checked after writing this post, wifi and bluetooth disabled and in airplane mode. Sorry, this is just creepy. Also, the phone has not been plugged into the computer since either.