ENGIE Manager Team Lead interview questions

Applied online, went through a video interview that was unusual (one-sided, not interactive with the interviewer), and was then contacted to come in for a face-to-face interview. The interview was very conversational and I felt that we clicked in discussing my experience and the role of this position. As the interviewer walked me out, he stated that the next step would be a peer interview with current Manager/Team Leads in the next 2 weeks. Within 30 minutes of leaving the building, the recruiter emailed me to ask what my minimum salary requirement was for the position, as the pay scale was lower than what I listed on my application. Why would you invite someone to go through video and face-to-face interviews if the salary range listed on their application was significantly higher than what the position pays?