Two rounds. Recruiter screen and one with a senior PM or PM II. Second round was focused on B2B scenarios specifically, such as subscription services, revenue, etc. and mostly behavioral otherwise

There was one call with the recruiter and one call with someone from the product management team. The recruiter call was easy, just talked about my interest in the company and my background, also logistics. Technical interview asked about the same stuff but also including a project I've worked on, a B2B tool I like, explanation of its software architecture and more PM related questions.