Dianthus interview questions

A recruiter reached out to me after he posted the job on Linkedin. After few days I got an interview with the head of an AI unit -- he asked pretty technical questions which were good , but I stated at the very beginning that he is under the weather, he sounded very sick during the interview. This was a bit concerning because he could have rescheduled the interview, I guess this is the result of WFH for a startup co. I went through 3 other rounds of interviews only to be told at the end that the co. has paused hiring for now , as they re-evaluate their hiring needs in light of the economic conditions. Overall I guess I wasted 3 weeks and about 4 hours with them.