I've been trying to learn German (not really) and I've come across the [x] sound. When I hear audio clips of it, it sounds really similar (almost identical) to [kʰ]. I have [kʰ] in my native language (Bengali). I've done a little research (not much because many places have too difficult of a wording for me) and seen that both the sounds are made around the same place. So, is it different or not?