HubSpot Tech Lead Software Engineer interview questions

The interviewers were friendly, and the actual interviews weren’t too bad. However, after about 9 total hours of interviews (screening, manager interview, take home test, 5 hour virtual onsite), I was asked to do an additional technical interview. Now after about 10 hours (not including prep specific to this company/position) I received a generic rejection email. Then after asking for feedback, I was ghosted. Don’t believe their recruiting material that you will receive detailed feedback even if you aren’t given an offer. I burned multiple PTO days in this lengthly process and ended up feeling I wasted my time.