Correct. The way that I define and understand chamber is that it doesn't have to be at the hip. It is only the action of pulling the hand back to the necessary point in which the arm is bent and ready to extend as a strike, block, jab, or to grab something. What is done when the arm extends is irrelevant to chamber. Bend the arm preps the arm for extension.
Attacker: The right arm is chambered the left arm is not. Defender: Both arms are chambered. The bent arms are in a position to where they can extend to grab or strike.
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There are exception when it comes to long fist techniques where the arm's ready position is sometimes extended. Instead of the hand being pulled back the entire arm is pulled back. as shown in the example below.. Long fist can start from the hands up guard position or it can start from a hands down position. My hands can be by my side and I can start the strike without bending my arms, but it requires the pull back of my arm in order to send it. The further back the pull the stronger the punch will be.
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The reason my definition of "chambered" includes a lot of things is because things fall apart and become less clear when the definition becomes too specific. For example if chambering is only when the fist is at the hip, The what is it call when the fist is pulled back at the chest, or what is it called when the arm is pulled behind the body like in my example, Or what if it's just a small bend while in high guard? or in long guard?? To give those specific names makes things confusing. But I'm willing to bet that there is no specific name to those other examples. I also notice that people who define chambering as only one specific position (at the waist) tend to be less happy and have trouble understanding other things, which turns into complaints about something being useless or doesn't work.