I did that, as bolded above.
The reason why I didn't uploading the small-file .gif was because, when it saved the .agif to a .gif, it became a static image. I just uploaded right now, and sure enough, it does not animate; it's stuck on a single frame.
I'll be a bit more detailed. After creating all my layer/frames, I saved into a .agif with certain delay/loop settings. Then I "save as" the .agif into a .gif. It then prompts me for dithering/transparency options, as usual when saving a .gif. I was then prompted to flatten it, which I did. I just followed through these steps a second ti