Hi Leo, thanks for reaching out! Clay can currently import SalesNavigator searches of up to 2,500 results through the "External List" method in the Find People search. I've added a quick step by step video below.
While it is not possible to automate syncing this search when new search results are added, Clay does integrate with Phantombuster and Apify that do have more extensive Sales Navigator scrapers and actors. Specifically, Apify has a Sales Navigator Alerts Scraper. You can then import these results into Clay using Pull Data from Apify or Phantombuster as a table source. Feel free to give this a try and let me know if you need any further assistance with set up!