In general, department managers or supervisors of companies should discuss with their superiors whether their influence on you and various abilities meet their requirements after recruitment. If I think I can call you in less than two or three days to go for an interview, the topic of the second interview is about the system and management of their company. If it is a week, it means that their company has been busy recently, or their company has always been like this, and the situation is different. It is also possible that people will call you a week later. I often recruit, sometimes this happens, because many things are changing ~ ~ ~ I hope my answer will satisfy you.