actually, my email did not provide the insights. I called them due to the fact that the assessment day date was after the supposed ED decision date.
I guess there will be 3 cases (this is a guess):
- reapplicants: yes i guess they move to R1 for their decision since there does not appear to be an ED AD, so they join R1 AD = december 4 decision
- 1st time applicants: interviewed, but the Admissions committee wants to know more about you --> get invited to R1 AD = december 4 decision
- 1st time applicants: interviewed, and the admissions committee feels they know enough to accept/deny --> no invitation = october 19 decision