Woah woah woah, just blew my mind. Am I understanding this correctly?

The DC NG reports to the president. Trump used the NG to legally occupy DC in the name of inauguration security. Cool.

Well when Biden was illegitimately inaugurated, he took over control of the NG, and thus the occupation of DC, and then immediately exercised authority publically. AKA a "Belligerent Occupation".

So check this out:

11.2.2.2 “Under the Authority” – Suspension and Substitution of Governmental Authority. Occupation also requires the suspension of the territorial State’s authority and the substitution of the Occupying Power’s authority for the territorial State’s authority. The territorial State must be rendered incapable of publicly exercising its authority in the territory, and the Occupying Power must substitute its authority for that of the territorial State. Invading forces in possession of the territory must have taken measures to establish their authority.64 For example, such measures may include establishing its own governmental authority for that area and making regulations for the conduct of temporary government. The suspension and substitution of authority may take place with local authorities continuing to administer territory subject to the paramount authority of the Occupying Power.

Biden taking control and publicly exercising authority is necessary to be a Belligerent Occupier. We are now set for 11.3

11.3.1 End of Occupation. Belligerent occupation ceases when the conditions for its application are no longer met. In particular, as discussed below, the status of belligerent occupation ceases when the invader no longer factually governs the occupied territory or when a hostile relationship no longer exists between the State of the occupied territory and the Occupying Power... Belligerent occupation ends when the Occupying Power no longer has effectively placed the occupied territory under its control. For example, an uprising by the local population may prevent the Occupying Power from actually enforcing its authority over occupied territory. Similarly, the Occupying Power’s expulsion or complete withdrawal from the territory would also suffice because the former Occupying Power generally would not be able to control sufficiently the occupied territory.