You can use a mixer and that's exactly what they're for and if you're concerned about being anon people should be using them. Of course this adds a bit more hassle into the process but that's the price you gotta pay for anonymity.
Agree, that's what I've tried to explain to previous poster, you have to make a break in the chain otherwise it can be tracked....
...Only way to stop tracking is to break that link between your inputs and outputs and only way to do that is to use a mixer of some sorts...