30 minutes interview from home in google meet - this is the first step which include asking data structures and time complexity questions. It was average difficulty I don’t know the next steps

Everyone was very professional and nice and welcoming but the process is very long and includes 4 interviews One in zoom after a conversation with hr recruiter This one was 30 minutes and was pretty basic getting to know the company and introducing yourself and a small data structure question Then another two and a half hours of professional interview that include system design and code test Than another hour an a half with r&d manager again profesional Interview with code and data structure questions and than there supposed to be an other professional interview - I wasn’t invited to it yet