Does Application.LoadLevelAdditiveAsync on the same scene twice load everthing twice?

Unity Engine
1

I was wondering if I call Application.LoadLevelAdditiveAsync to load a an additional scene, and then call it again , a second time, will Unity ignore the duplicate objects that already exist from the first call to LoadLevelAdditiveAsync, or will it load the game objects twice?

2

Twice I think but im not sure.

3

it will load them twice.

handling scene unloads etc is up to you when you use additive to prevent such collisions