Herceptin every 3 weeks/infusion time

Hi, I was wondering how long the infusion time is for the Herceptin every 3 weeks. My inital was 90 minutes and I thought it was at least 60 minutes for each treatment after that. The treatment nurse wanted to give it to me in a 30 minute infusion time and I refused. I insisted on 60 minutes and got it that way. I think I read on this board that a longer infusion rate is easier on the heart. Are there are results or articles anyone could please post as a resource to show others (onc,nurses)? Also, I am ER+. Is there hormonal therapy that is being given along with Herceptin? I was on Tamoxifen but my onc stopped it once I started on the herceptin. I finished AC+T chemo one year ago so I'm very lucky to be on Herceptin. I was stage 2, grade 3, 2.3cm IDC, sentinel node negative, Her 2 +, ER/PR +. I was dx at 35 and have since had a complete hyst to shut down my ovaries. Thank you very much.