Honeywell Machine Learning Engineer interview questions

3 rounds, first hacker rank(code+adaptive reasoning), second 1hr technical third 30 min with hiring manager. I applied through indeed. Recruiter contacted me and asked to solve hacker rank within next 48 hrs as she said it was urgent hire. I finished it and got call for technical round with a ML engineer. Questions ranged from standard to JD specific. Next round with hiring manager involved basic behavioral questions. After this ghosted. Neither the hiring manager not the recruiter replied to any follow-up emails. I don't understand why is it so difficult for them to at least send a courtesy email. At this point I am not even expecting a feedback to work on.