AECOM QA/QC Manager Position interview questions

It was selected by a headhunter company. First of all I've been promote myself for a headhunter who has promote this role. Then as usually they sent mc CV to review by client. After client positive feedback I got a contact person to arrange phone call interview. The whole duration of contact to interview was less than 2 weeks. After 4 weeks I have got a feedback that client has choose another person for the role. However I was the second in the line so they promoted me for another role in the company. It was the first time when I had after an unsuccessfully interview I have got a chance to candidate to another position promoted by the interviewed person.