In normal staging if you had two decouplers detach, they both detach at the same time. But what if you could make one interstage detach straight away while the other takes a few seconds to detach. Here is an example:
Active stage:
Detach interstage no.1
Wait five seconds
Detach interstage no.2
Or what if we used electric motors, which is basically the entire post in general. Here is an example:
Active stage:
motor no.1 turned on at regular speed.
Decrease RPM by 50
Motor no.1 turned off
Wait five seconds
Motor no.2 turns on at regular speed.
Wait five seconds
Motor no.2 turns off