Like many things, one can probably drive a truck through this. The Common Data Set's definition of an applicant:
"Applicant (first-time, first year): An individual who has fulfilled the institution’s requirements to be considered for admission (including payment or waiving of the application fee, if any) and who has been notified of one of the following actions: admission, nonadmission, placement on waiting list, or application withdrawn (by applicant or institution)."
Everyone is playing by the same set of rules. "Considered for admission" can mean just about anything. Technically, NASS applicants are informed that they are also automatically opening an application to the USNA.