Merck Executive Customer Representative interview questions

I was brought in for what I thought was one initial interview. Ended up interviewing with 2 CTL's back to back. About an hour each. On my drive home I was called by one of the CTL's to come back in for a third interview by the Director. Overall all great experience and great people.

STAR formatted questions. Usually a recruiter screen then a manager screening with 2 managers or a manager and a Executive rep in rare cases. Director does not always need to interview the candidate as they leave that up to the managers (Customer Team Leaders).