Default [q] boot animations

Am I to understand that there is a way to flash an animation.zip in the recovery of KitKat ? I am running a rooted 4.4.2 NC5 with Philz CWM recovery, would the zip flash in this updated version? Finally, and this may be a stupid question, at least on my phone there appears to be two animations on boot up. One, is Samsung Logo, the other is Sprint Logo, which one or both does the Boot animation.zip replace?