We are thinking of booking some large rooms with 2 double beds in USA. We are 2 HH Gold and 2 non status guests who would stay in the same room.

Here is the rule from HH website:

"a complimentary continental breakfast for you and up to one additional guest registered to the same room each day of your stay"

So 2 gold registered in the same room could bring one guest each as long as this guest is registered in the same 4 persons room, right?