it will render as a moving image (if it does not you have not done it right). If you want it to move when you scrub the timeline go to the material’s Illumination tab (in 10.5) or the Editor tab (in 12 – i don’t know which it is in 11.x but it will be one of those) and check off ‘Animate Preview’
with A Intersect B both objects will already be invisible (except where they both occupy the same volume) – you just have to put the texture you want the face(s) to have on animated object.
if your image sequence is named sequentially and in the same folder you only have to import the first image into your material but to make it work you have to click on the name of the image (in the Material’s Texture slot to open the Bitmap Shader attributes, go to the Animation tab and hit Calculate on the bottom
in your Luminance channel click on the name of the movie (the Texture choice), that will take you into the Bitmap Shader Attributes. Set Timing to Range and set your Range Start and Range End for the movie.