The person I spoke to was very sweet and answered all of my questions at the end. I suppose I went wrong somewhere since I did not get the job, but the interview was a good experience otherwise.

I had one online interview, which was easy, basically going through my resume, and went fine - the interviewer was very friendly and nice. Within a few hours I was emailed that they would like to proceed with the next step. The second interview was also virtual, with a different person. Like the first interview, at the end I was told that they would be in touch later that day or the following day. Unlike the first interview, however, I never heard anything. After a couple weeks or so I followed up with the second interviewer; instead of her replying, someone else emailed me to inform me they would not be moving forward. It was frustrating to not get a response as promised, and I felt whiplash from the contrast of the first interview (i.e., being invited to progress within hours) vs. the second (i.e., essentially being ghosted).