PLOS interview questions

Heard from the recruiter 1 week after applying and scheduled first interview with them then. Heard back 1 week later to schedule second round interview with person who would be my manager. Both interviews were fantastic! The second round interview went 20 minutes over because the manager loved my questions and then wanted to explain the team and company dynamic more in depth. They said I would hear back by a certain date to schedule the final round but then unfortunately I never heard back.