It was good to see the HR was talking technically, but they may not have the experience to judge the scientific ability and credibility. Also, they sent a questionnaire to assess analytical thinking and IQ, but ghosted after that; no update on the application status even after follow-up. Companies, especially startups, take the candidates' time as take it for granted. Respect is something lacking in the interview process. And the important thing is they are not asking out of the world, high IQ questions to judge, even so, you can still respect the candidate's time. An interview candidate is one's future employee, disrespecting anyone's time is a great attribute to become successful.