Won't it vibrate both on your arm and in your pocket, then? I can't even stand when someone decides to send 10 one-line message, let alone when it happens where

Won't it vibrate both on your arm and in your pocket, then? I can't even stand when someone decides to send 10 one-line message, let alone when it happens where both my watch and phone vibrates.. (Seriously, why is vibration cooldown not a thing? I believe android will have something like this, but this should have been available for a decade! Like if I had 2 notification from someone 0.3 seconds ago, then I will surely not need a third one now)