Animating the visibility (or spawn/creation) of a decal along a spline

Hello UE geniuses!

Pretty new to UE5, and not familiar with blueprints.
After following a few tutorials, I was able to have a decal (tire tracks) follow the spline of a camera rail. To note, this is a cinematic, I’m using the sequencer, not gameplay.

Now that I have the decals along the spline, I’d like to animate the timing of their visibility/creation to correspond with the timing of the vehicle animation. I can’t have the tire tracks show up before the vehicle creates them.

Does anyone know how to do that? I’ve made the blueprint that creates them along the spline, but I don’t know what nodes to use (how to connect things) to have them created/ show up in sync with the vehicle animation.

The blueprint was done following these 4 tutorials:

#4 Controlling The Decals - Unreal Engine 4 Spline Decals Generator.

Any help is greatly appreciated.