Animated splash page?

Example: https://www.figma.com/file/Ce9DKlCUH7gU0JZWMKu2s3/Example?node-id=38%3A214

What I’m trying to achieve:

  • Create a splash page that is at the very beginning of the app, when the user first opens the prototype (no need for them to interact with it)
  • The background is animated and begins as soon as the prototype is opened
  • After a delay, the content on top of the animation changes and an overlay pops up from the bottom
  • The animation in the background should remain uninterrupted when the overlay pops up and should continue being animated once the overlay is up

I don’t really care what method is used to create this effect (right now I’m trying to use Figma + a vector to do it) - I can’t think of a way to make a Lottie file or something like that work, but maybe y’all can?

Thanks!