Timeline for scene change?

Hi, I've nearly reached the end of making a four scene VR experience. I say 'experience' because, once you've pressed start, it's just an immersive four scene story with an audio track telling you what's going on. The scenes are all made, but now I need to chain them together so that when scene one audio ends, scene two begins, when scene two audio ends, scene three begins...etc.

Q1: Can Timeline be used to implement this desired outcome or do I need to do something else? Q2: The scenes aren't massive, but It would be handy to begin loading the next scene while the current scene is running. I assume that this can be done to prevent delay between scenes?

I know that the answers might require some in-depth explanation, so If anyone can suggest a known tutorial video which explains some of the above methods, I'd take that. Hope you can help. Thanks