They have pre-printed forms with a bunch of stupid questions that don't actually get to the heart of who you are and how successful you'll be in your position there. The interviewers stick to the script instead of asking real questions and getting to know the person. When there are mass interviews, the process takes around 30 minutes. If the organization is hiring a bunch of people, they barely even pay attention and just write down random stuff you say. If the interviewer likes you, they'll recommend you. If the interviewer doesn't like you, they won't. Pretty simple and straight-forward process.