I don't know if this is necessarily true in all cases. For example my file was marked as closed on Sept 2 and I still haven't received my certificate. I also called yesterday afternoon and the agent I spoke to at the call center said that my oath form was just received in the morning yesterday which seems odd since I sent it 5 minutes after my ceremony on August 30. I think it depends on the officer and office but that is just my own opinion.
I don't know if this is necessarily true in all cases. For example my file was marked as closed on Sept 2 and I still haven't received my certificate. I also called yesterday afternoon and the agent I spoke to at the call center said that my oath form was just received in the morning yesterday which seems odd since I sent it 5 minutes after my ceremony on August 30. I think it depends on the officer and office but that is just my own opinion.