:-[ Assume I have a Dynon D100 as my PFD EFIS, and using a Dynon D10A as my backup EFIS, linked via the DSAB bus. If I now set the barometric setting in either one (typically in the D100 as it is the PFD), would that value then be updated in the other EFIS (i.e. the D10A via the DSAB bus) OR...