TD interview questions

Applied online and was contacted by HR to come in for an interview. The interview was scheduled early in the morning (8:30am) and I guess the hiring managers were running late because I ended up waiting for 15 minutes or so for them to appear. The questions were pretty standard but when I mentioned one or two items from the job description was told they had nothing to do with the job I was applying for and shouldn't have been on there. I actually had to hand these people the job description because they had no idea what was on it. HR cobbled together their own job description instead of finding out what the actual duties of the job were.