Here is my timeline August 2022 filer (Pittsburgh Filed office)
N-400:
Filed: 08/11/2022 (bio re-used)
Interview notice uploaded online: 08/12/2022
Interview date: 09/19/2022
Approved same day: 09/19/2022
Oath ceremony same day: 09/19/2022
Altogether everything in 39 days only... never seen USCIS working this faster