"On November 22, 2022, Biden's attorneys discovered the first set of classified documents in a locked closet...they reported them that day".

If you're in possession of a calendar, you will notice that November 22, 2022 is actually before January 2023. You might also note the "consensual search" in your own quote.

So a normal person might conclude that the Justice Department called Biden after he reported on himself, and said "We see you said you had some documents, so maybe you forgot some more? Can we come search with you?" And Biden maybe said "Good idea."