Very long, I had 1 call then 2 video interviews then i was flown out for an in-person interview and ghosted. I emailed twice and the hiring manager apologized and said interviews were wrapping up Friday that was a month ago

It is a lengthy and not very clear process. They show an insane interest to references instead of talent and skills. People from different locations contact you in order to let you know that you will be contacted again by one of them. Introductory phone interviews are conducted in a casual way.