It is typical for aerospace companies to have in-house "FAA delegates" who function in the stead of direct FAA reviewers, and it looks like all that is going on here is the FAA is allowing Boeing to go back to using their own internal delegates (every other week!).
https://www.faa.gov/newsroom/faa-statement-boeing-airworthin...
https://www.faa.gov/other_visit/aviation_industry/designees_...
It is typical for aerospace companies to have in-house "FAA delegates" who function in the stead of direct FAA reviewers, and it looks like all that is going on here is the FAA is allowing Boeing to go back to using their own internal delegates (every other week!).