Walmart global tech senior backend engineer

I recently completed a couple of interview rounds with Walmart for a Senior Backend Engineer position.

The first round focused on Data Structures and Algorithms (DSA). I was presented with two medium-level LeetCode questions. I successfully solved both and received a green signal. I don't recall the exact question, but it involved stacks.

The second round was a Low-Level Design (LLD) interview where I was asked to design a concurrent hash map. This round went well. The recruiter contacted me to schedule the next round, which was going to be a High-Level Design (HLD) interview.

However, it has been a few days since then, and no further rounds have been scheduled. I have tried reaching out to the recruiter for an update on the scheduling, but they haven't responded to my calls or messages.

I am unsure if I should consider myself rejected or ghosted. Should I continue waiting, or is it time to move on?