Same in some ways as you can't measure Voltage and current on a DC fed piece of copper at once with the same meter. just saying...
It's a sad fact that so many 737 pilots seek more detailed information in vain. I'm in the same boat for a few things, but the internet is an amazing place.....
The trouble with engineers documentation is it is difficult to understand - certainly for me! Best of luck and I applaud your thirst for knowledge!