I never had that floating over the document I was viewing, just in the home tab of the menu, but I did find a way to switch it off. ‘File > Preferences > General’ has an option to ‘disable all features which require an internet connection’. There are also options in there to disable that opening splash screen if you don’t want that.
I fall on my ass in the carpark outside the office. It’s cold, but assuming there’s no car there at the time, I just walk round the building and let myself back in.
I thought the no car thing was a pretty safe bet at this time, until one drove past as I was typing this.