Earlier quoted context omitted.
Releasing the information 4 days later implies it took 4 days to properly process and categorize. It probably did take some time to properly process and categorize it, because anomalous sounds happen underwater all the time, and unless it's a subsea nuclear detonation or a Russian propeller screw then it's going to go into the "figure it out later" bucket. So what we know is it took no more then 4 days to categorize…
>Joe Internet-Commentator looks at that and says "oh it was totally instant, probably". Kind of, yeah. There is a good timeline on when the ship was in water, when an event would have occurred, plus a very narrow geographical search area. That is significantly more information than is ever available when chasing ghost submarines. It is difficult for me to imagine some bored analyst did not pop open a graph of activit…
All of that has to run through the chain of command and declassification process.