>1000 entries on a S3 bucket without continuation token?

I noticed that Sony has a [semi-open S3 bucket](https://pro.sony/s3/) where if you have the direct link for a document, you can access it. The main link gives you the keys for the first 1000 links, but I can't figure out how to get it to list the next 1000 or all of them since it doesn't provide a continuation-token.

A lot of it is indexed by google, but I'm looking for a full list of what's available, particularly for service manuals for repairing old professional CRT displays. If there's an alternate way to go about getting this list, I'd definitely be interested.