Lee Spring Company interview questions

Had 3 rounds of interviews 2 for screening 1 in person and onsite There was supposed to be one more allegedly with the CEO (for a total of 4 interviews) An engineering aptitude test is required. I am only rating the interview difficult, because of the multiple rounds of interviews, an aptitude test, and lack of response from the employer (they ghosted me)

they took 3 round - aptitude + personal interview + Technical and you are supposed to give one more HR round after a week then they will let you know about your application