Oh, wow, um... okay, let me check what stitching that would entail...
Yeah, okay, that comic you linked wouldn't be impossible to stitch together, but it would be on the really really high-end.
So let me tell you how to stitch a regular gif to a non-animated slide. Something like post #55851
. The animated slide is on page here is 884x634, with a 100ms (combine) frame. What that means is there are two frames -- a base and a second frame on top of it that will combine with the one below every 100ms.
In order to get the full comic in, I would need to increase the the whole thing the size of the full strip I want to create. However, since there are two frames -- the base and the second animated one -- any of the new panels being added in needs to be placed down on the base frame and the animated one needs to remain where it is.
Things get more complicated when you have more than one animated frame in the comic, for example post #56689
. However, this one is still easier than 47984, because the animated frame all match the same speed of each other -- 100ms. So, in this comic you would do what I would describe above, except you would also put all the animated pieces on the second frame.