Are you able to point to something official that the AOA is done? AFAIK the AOA is in the twilight zone.
It's right there in the budget dox.
The 2030+ AD working groups methodically assessed candidate concepts using USAF directives and guidance. Resulting concepts informed the NGAD Analysis of Alternatives (AoA), which is in the final stages of coordination.
They're normally reporting behind where they really are for security reasons. Everyone does that, not just the USAF.
You don't need $1B for an AOA.
It should be obvious, but the AOA won't be made public.