What is the name of the thing where objects are well connected and pass through different sections to finally help do one thing at the end in a creative way. Where an object moves along a specific path, hits another which has a new path which moves along and hits another etc? :)
A 'Rube Goldberg machine'?
Here are some examples of what I think you might be talking about. https://www.youtube.com/watch?v=dFWHbRApS3c
(The name comes from the cartoonist Rube Goldberg, who would draw cartoons of fanciful and intricate inventions like these.)
A Rube Goldberg machine.
It is a machine that goes through complicated and unnecessary processes to complete a simple task.
Example: Task: to dump dog food in a bowl. Start: a phone vibrating when it receives a phone call, knocking down a set of dominos.
Wikipedia: A Rube Goldberg machine is a contraption, invention, device or apparatus that is deliberately over-engineered or overdone to perform a very simple task in a very complicated fashion, usually including a chain reaction. The expression is named after American cartoonist and inventor Rube Goldberg (1883–1970).