Tesco Manager interview questions

Interview was on teams conducted for the position of Manager Group VAT role. Interviewer asked technicals questions on VAT, team management, situation bases questions. Even they select the candidate, they will interview more candidate and select one of them in one round of interview. However, i believe when they have multiple shortlisted candidates, they could gave conduct one more interview with the next level to avoide any biasness. Tesco is very late in updating the status of interview with the candidate. They shoul also takeup candidate if they really satisfied with the experiance rather rather just to have more details.