Until the day the machine has been UEFI-flagged to require online connectivity regardless. Yes, that's a thing, and the flag's been lurking in the UEFI since Windows 10 1809, even. Intune/Windows Autopilot leverages it for out-of-the-box MDM enforcement.

https://oofhours.com/2019/08/17/requiring-a-network-connecti...