My friend went to one of those about 3 weeks ago!
His involved a 10 minute one on one, then a group challenge after. He got called the next day to attend the 2nd round, which was about 4 days later. In that interview he had more questions, they had to do some roleplay, and they had to do some PA announcements. Anyway he got the job
If you have any more questions feel free to ask, he told me pretty much every single detail.