They email you months after you apply, so you likely already got another job, just to tell you they are reviewing your application. Then they email you saying they want to email you and you have to call them; keep in mind, their time zone is very inconvenient for people who work on the west coast. They fly you to Houston to do the interview.
You get there and they show you a short presentation. Then they tell you that it'll be a short day and you'll have a 5 minute interview and then be sent home. Then they start calling you back for 1:1 interview. You either are told to go to the airport or are slipped a piece of paper telling you that you have to go to the airport and then come back later, but can't tell anyone that you were called back.
I like that the interview started with a 1:1 interview, but hate the fact that they can't tell you to your face that you didn't get it. Also hate the fact that they get an impression of you in 5 minutes or less. The whole secretive process is a waste of time for all the applicants that took off time for work and booked flights that get them out at the END of the day, not an hour after you arrived. Most of us were out by 10am and had flights after 5pm and had to wait in the airport the entire time.
I don't see why they're afraid to reject you in person. Emailing you a week later isn't any better, especially when everyone at the airport is already talking to each other about whether or not they made it or not.
The whole process seems overly complicated and deceptive, when it doesn't need to be.