I've seen this thread https://e2e.ti.com/support/amplifiers/current-shunt-monitors/f/931/t/295168 but I'm still not confident on how to utilize two INA226 when the positive and negative rails share a common ground. I want to monitor +/-28V. Looking at the -48V Telecom example, it looks like the isolation would be removed byt the fact that the microcontroller ground, positive rail ground, and negative rail ground are all the same.