what does this mean? NC is done?

I called USCIS and ask why my case is delayed so long time, and 3 weeks later, got the email as following:

The status of this service request is:

Service records show your case is currently waiting to be reviewed by
an officer. You will receive a decision or notice of other action once
your case is adjudicated.

Then how long it will take them to process the case? Does this mean NC is done?

A lot of thanks to this bulletin board