How to run multiple scenes

looking at a file like all_part_1_scenes.py. Is that intended to be used to create 1 video when all scenes have been debugged and working? I have created 2 scenes in 2 files and want to run one after the other to create one video. I made a file similar to all_part_1_scenes.py which looks like this:

But when I run the high level all_scene file - i get the option of 1 or 2 to run scene or scene2. How can I run scene2 right after scene(1) in the same video? Or is the idea that each scene in all_part_1_scenes gets run and generates its own video then I use a video editing tool to link together all the separate scene video files?

from MIT_Logo_Scene import *
from MIT_Logo_Scene2 import *

SCENES_IN_ORDER = [
MIT_Logo_Scene,
MIT_Logo_Scene2,
]