No. Webflow supports collection>post. If you need nested paths I would choose a platform designed to support that natively. There are ways to hack the presentation but I can’t see why someone would want to go through all the effort and limitations.
It’s not supported natively, however it’s actually the main use case I designed SA5 Layout for. I’d most likely build the 3 levels as 3 separate collections, with each collection item containing a single-ref to its parent item.
For example, continent, country, city is a 3 level hierarchy.
Here’s a simple demo of what that looks like a 3 collection lists that are “stitched together” with SA5 layout.
It uses a simple container-item tagging approach, where custom attributes can just be bound to CMS slugs for convenience.