Questions posées lors d’un entretien d’embauche pour Frontend Developer chez CodeCraft Technologies

All the interview round was conducted over skype. The interview experience was very good and the interviewer were well behaved and had sound knowledge. The only problem is that when I mentioned that my notice period is of say 90 days during all of the 4-5 rounds of my interview and if you are not ok with it, why bother to continue the interview and waste everyones time?