Thanks for a great explanation. I agree it can be jarring when one's deep in the character's point of view and then suddenly flipped into another characters head. A bit like Sam Becket in the old TV show Quantam Leap - one feels disorientated. I think you nailed it in calling the difference between an omniscient narrator (who is not confined to one point of view but is looking from above) and deep or even limited third person point of view. The issue with an omniscient narrator is that this approach lends itself to more telling than showing (another contemporary fiction crime that Nola dealt with earlier).