[Summary of initial mail by Min: Is it true that POV-characters have to be physically apart?]
Look at GAME OF THRONES -- there are plenty of places there where two or even three differenet POV characters are together in the same place at the same time. It's only later that they scattrer. There are no hard and fast "rules" for this. I use the POVs I need to tell the story... and I want each POV to have his or her own story within the story as well, i.e. to change and grow and develop.