Huge waste of time. First interview with HR was postponed last minute (1 hour before the scheduled time). A new date was given. During the interview, HR asked many questions as apparently they were building a new team and said that after the first interview there would be likely 2 or 3 more interviews and that they are still in early stage of recruiting. They wanted to know if I was in the final stage of interviews for any other company, to which I replied no. 1.5 weeks later, I received a template email saying that they have "decided not to fill the position at this time and have cancelled the requisition".
TLDR, don't bother taking time off for this company. It seems like their hiring budget has been abruptly cut.