A podcast player may request information about an audio file or ask for only part of it. A server that returns a file during one full download is not automatically handling every request a player may make.
Know the two checks
A HEAD request asks for response information without the full response body. A range request can ask for a portion of the media. These are delivery behaviors, not separate episode formats.
Check the current hosting and destination guidance. Apple Podcasts includes HEAD and byte-range support in its technical feed requirements. A managed podcast host may handle this for you, but the public media path still matters, especially after a proxy or storage change.
If you have the appropriate technical access, inspect a normal file response, a HEAD response and a small byte-range response. Compare the returned status and headers with HTTP documentation. Avoid testing with private or access-bearing URLs in public troubleshooting posts.
Test the listening experience as well
Open the published episode in a normal player and try seeking to a later point. This does not replace protocol checks, but it adds evidence that the actual user path works.
When a problem appears, compare the final public media URL with the storage origin. A proxy or redirect may change behavior between them. Report the exact request type and affected path to the hosting provider.
Keep a known-good delivery example for future infrastructure changes. The goal is reliable media access through the path listeners actually use, not a collection of successful tests against an internal address that no player ever requests.