IDOC request mean anything?

On all of the acceptance threads, I tend to see posters saying that they got a request from financial aid for documents. Then, the conversation always ensues around whether that request says anything about whether the student will be accepted. Has anyone figured out if that request is definitely a sign that the student is getting in?

I hear posters say it does. I also see posters saying that, for need blind admissions, it means nothing since financial aid supposedly works separately from admissions.

We didn’t file the CSS and aren’t looking for institutional aid but I’m just so curious since I keep seeing people getting excited about requests for documents!