Quoting from above: “Separately, your story of two AD’s gushing over your son is upsetting. I don’t understand their motivation. In retrospect how have you made sense of that conversation?”
I’m assuming by AD we are talking Admissions Director, which could also mean a senior, mid-level or junior person in the Admissions Department.
These 2 ADs at different schools may have rated the applicant quite highly, but at many boarding schools there is normally a several person admissions committee that collectively makes decisions on each applicant by assigning qualitative and quantitative measures or scores to each component of the application. The interview is only one part of the overall evaluation of an applicant. An AD can help one’s candidacy, but usually cannot single-handedly get a student admitted.