There are 3 apparently different 3v3 rails on the google coral som/devboard. What is the difference between V3V3 on the header, and DCDC_3V3 and VDD_3V3 on the hirose connector? I'm most interested on the relative current each is able to supply. I am also curious to know why the board does not boot at all if I tie DCDC_3V3 and VDD_3V3 together?
https://www.mouser.com/datasheet/2/963/Coral_SoM_datasheet-1627669.pdf