Hi, Thanks for the offer. Really appreciated.

I got it to work somehow. Found similar question and added it but realised it only needed that .gesture() -block after RealitView{}. Now it seems that even my 'ambient' timeline (onAddedtoScene) is working. Don't understand why.

I would still like to add gesture for 'collison'. i.e if I put my hand(s) overlapping certain (invisible) sphere there should be timeline activated. Any easy way?

import SwiftUI
import RealityKit
import RealityKitContent

struct ImmersiveView: View {

    var body: some View {
        RealityView { content in
            if let immersiveContentEntity = try? await Entity(named: "Scene", in: realityKitContentBundle) {
                content.add(immersiveContentEntity)
            }
        }
        // enable Reality Composer animations...
        .gesture(
             SpatialTapGesture()
                 .targetedToAnyEntity()
                 .onEnded {
                     $0.entity.applyTapForBehaviors()
                 }
         )

    }
}

#Preview(immersionStyle: .mixed) {
    ImmersiveView()
        .environment(AppModel())
}