Questions about using ResourceLoader.load_threaded-request

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1

Would it waste resources to first open a scene with get_tree(). change_stcene_to_2file, and then load the same scene with ResourceLoader. load_threaded-request? Will it load twice?

get_tree().change_scene_to_file("res://levels/levels_all.tscn")
...
...
#("res://levels/levels_all.tscn")scene script code:
func _ready():
	ResourceLoader.load_threaded_request("res://levels/levels_all.tscn")

func _process(delta: float):

	if not path:
		return

	var progress = []
	var status = ResourceLoader.load_threaded_get_status(path, progress)
	if status == ResourceLoader.ThreadLoadStatus.THREAD_LOAD_IN_PROGRESS:
		progress_value = progress[0] * 100
		progress_bar.value = move_toward(progress_bar.value, progress_value, delta * 20)
2

I think it would load it twice, since the change scene to file function adds the instantiated scene to the tree, while the resource loader doesn’t instantiate anything and only loads the PackedScene.