Celonis Application Security Engineer interview questions

Had the worst interview experience with Celonis. Got a call from BoostTalent that they liked my profile for security engineer role and I responded with an interest. Had an initial interview with the Director of Application Security. He had a very strong yes to move me to the next round and wanted to skip the Hiring manager round and directly proceed with the technical interview. He conveyed the same to BoostTalent. But this was not conveyed to the Celonis recruiter and they scheduled an interview with the Hiring manager. One day before the interview, I got a call from BoostTalent that the Director was very happy with my profile and wants to proceed directly with the technical round so the hiring manager interview will be canceled. I reached out to the recruiter to confirm if the interview is canceled or not, and they responded one hour before the interview that the interview will still happen and it will just be a 30 min discussion with the hiring manager. When I joined the interview, the hiring manager said: let's make it a one hour interview and he asked all technical questions lasting for 1 hour. After this round, I never heard back from the Celonis recruiter or BoostTalent. I even followed up with the recruiter to ask what was the current status of my application, but never got a response.