Interviewer was friendly and was constantly discussing the approach I was looking for. It's been more than a month since I gave interview with walmart but seems like HR of this organization have gone for a long vacation refusing to reply to any email or phone call asking for interview feedback. Leaving candidates ghosted seems to be a new trend amongst orgs these days

3-4 rounds including DSA, LLD and last round being Hiring Manager round. DSA rounds are pretty much standard questions while LLD rounds can vary based on years of experience of the candidate.