Delaying, delaying....
Before, they were many USCIS field offices practicing the same day oath ceremony.
Today, almost NONE.
Meaning that there should be an internal policy to avoid such Rush.
I read on a different thread I guess last September someone saying that, after completing his N-400 test, the immigration officer told him that there will henceforth be no more same-day oath ceremony.
That field office was none of those practicing the same day oath ceremony.
Since then, I haven't heard of anyone having going through the oath ceremony the same day after the interview.