If you are busy, do not waste your time here since you will feel extremely unprofessional. I finished a HR call and 5 rounds of interview then totally be ghosted. Rejection is not a big deal, but after you spend so much time and people totally disappear is rude. HR never respond to follow up emails, no mater you are asking for result timeline, interview topics or remaining interview process. I even don't know I am in the middle or final session of whole process. HR will ignore your questions in prior emails pretend that they didn't see it, but will still reach out for the next scheduling when they want.
For scheduling, it is also funny all the way. First HR phone call actually scheduled half hour before the time slots I provided, I skipped a meeting to attend. Same day scheduled another round without HR call finished yet. I provided first availability just for HR call but they also used that for next round without a notice. Other things like, HR once requested earlier days availability in the week that I have to move around my busy schedule to fit on that date. However, it turned out interviewer is in PTO when we met, noisy background, no video. Then why we don't wait for people come back and I also have better availability that I provided at the first place? Last but not the least, swap interview time length in mistake between sessions, Twice. Final scheduling time length for each person are always different than what HR saying in the emails. I was tired of asking these confusions in emails since no response anyway. People are busy and taking interview not for fun, please be respectful to each candidate's time.
