A script without defer and without async stops the parser exactly where it stands. It therefore sees what comes before it in the document and nothing after it. That position is measurable in the raw HTML, and with it the amount of markup that is still missing when the script runs.
The page is fetched once from this server and read as text. Only the request is stored, for the hourly limit.
Eight queries per hour, at most 3 MB per document, private address ranges are refused. Nothing is rendered and no script is executed.