Anyone own a Medela Pump In Style Advanced Pump??

How long does it take you to pump both (at the same time). I recently started using the pump after 3 weeks of feeling like a human pacifier to my daughter. However, it seems to go SO QUICK, i'm not sure if I'm using it right. It takes around 5 minutes, sometimes less, to quit having milk come out. Is it normally this short of a time?? It just seems too easy/quick to be true. 5 minutes to pump, < 5 minutes for her to eat from a bottle. Instead of 45min to an hour of trying to get her to latch on correctly, stay awake, and complete a feeding.