Update of themes via the hub

Hey guys,

Could I ask if 'deactivated themes' are updated via the hub? Where this plays a part is if you are using child themes on a site, does the hub detect if the Parent theme has an update?

I ask as I have a number of Divi sites that do not seem to notify me of parent theme updates, nor perform them when selecting "Update All"

Have I set it up incorrectly or is this something you should possibly have a look at?