I learned how to make doors move with a timeline. Is there a reason to use a sequence over a timeline or vice-versa?
Sequences are defined points and may not translate well when moving in the world. Timelines can be controlled programmatically which is a good thing.
For doors, I would be inclined to use a timeline unless it relates to an animation. i.e. if it is a door you interact with, use a timeline. Also, if you want to change how the door opens, a sequence may be harder to modify. It really does depend on what you’re doing.