If you are looking for interviews, you can use Inspect Elements Network tab to see the requests that your browser makes.
There is a POST request to Algolia (search provider, same as HN) that you could take and re-create in your own system to generate the RSS feed.
The POST data you are looking for is something like:
```
{"requests":[{"indexName":"interviews_publishedAt_desc","params":"query=&page=0&hitsPerPage=20"}]}
```
--
With all of that said - your best bet is to ask @csallen on Twitter or post on IH itself.