Hi Las,
It seems possible however you should manage the DTPs and do some consideratios into the datatarget since in order to have all information you will have at least 2 loads and this could be an issue.
I will recommend you to use Multiprovider or Query (with both of DSOs) as the source of the Openhub. By doing this you will not have in mind the datatarget.
Hope this help.
Regards from MX.