It's not that there is a pause between the sound and the flasher, for the kickout/ saucer, it's that there are sometimes two Sounds playing where there only should be one. I guess they added a different Soundeffect for certain occasions without turning the other one of.
So, basically:
Sound1 -> Sound 2+Flasher -> Kickout
-or-
Sound1+Flasher -> Sound 2 -> Kickout
Instead of:
Sound+Flasher -> Kickout