Seems they cant conduct interview of the people they schedule, even after taking an entire day.
Last week I went for interview , around 40% of the candidates didn't got a chance to be interviewed even after waiting for entire day.
Interviewer was totally relaxed , taking an hour to interview single person with very simple questions.
HR was passing instructions , I don't know what .
He made me wait for 5 hours and then after an hour of interview , HR interruped and abruptly closed my interview and told me to leave.
Some 40 % of the candidates didn't even got the chance to be interviewed.