I had read the Configuration reference [temperature_sensor] before posting but I still don’t understand what " sensor_mcu: XBRD" is. Is it a pin assignment, virtual pin assignment? I don’t see anything in the pin aliases in the config file. I notice that the first MCU doesn’t need it to work.
EddyMI3D - this is a syntax question. My printer.cfg file would not load or load and point to the wrong temp depending on what I was trying. My klippy.log was to big to attach without zipping so I just copied the pertinent part of the config file.