Working with Multiple Creatives | Fireplace / U-Shape

Hello fellow Hypers,

is there a way to set up pageLoad.handler inside of a hype.file to check if the sister.creatives are loaded before playing?

I have to creative a Fireplace and these are made up out of 3 banners. But if one starts before the other, the whole animation is out of sync.

Does anyone have a thought or idea on how to realize this in Hype?

Update … 2

Adding a temp link to give a visual reference. Added a second page. Navigation is working.