Onlined/Finished the spot.  Created the effect of Hero vacuum cleaner on frame-right sucking up the one on the left, using warping and other tools in flame.  Combined multiple takes and plates for both vacuum cleaners (shot against green screen) to create the desired timing in the final shot.  Created the fake seamless and rolled backdrop, added lighting  to it, and created contact and cast shadows (all in 2D/flame).  Composited the CG pipe to the victim vacuum.  For added touch, comped and animated a residual falling piece of debris inside the transparent tummy of the Hero vacuum (after it finishes sucking up its counterpart completely).