My son is looking for a job at the moment. 2 large companies he's had to do multiple stage interviews. One of them he had to write a 2 hour test. Only those who passed went onto the next stage. Next stage was 2 1 hour online interviews and the final stage was an in person interview.
Despite apparently passing all of this, they've not said a word to him for a month. He chased up, politely, and they have not responded. Why do firms do this? The closing date was long gone and the job is no longer advertised so I expect they gave it to someone else.
Second one, he did a test, passed the test then did 2 interviews over the course of a week. The first one, the woman didn't turn up and 10 mins into it, someone came in and said 'oh sorry, she's not here today'. He had to go home and chase her to reschedule which she did and the 2nd time, she turned up 15 mins late with no excuse. He said the interview went well but who knows.
My daughter's partner tells me this is normal these days in recruitment. When he got his latest job, he applied to 70 job adverts most of which never responded to him. I sort of get not responding if all you have is a CV and you think they aren't suitable but you'd think if you'd invested the time to make a kid write a test, do many hours of interviews and meet them in person that at least you'd have the manners to tell them no rather than leave them hanging!