As far as I am aware, KB4073290 supersedes KB4056892.
On my machine I uninstalled KB4056892 (using Control Panel) after the failure to boot when it tried to auto install. When KB4073290 was released I downloaded it from the Microsoft Catalog, double clicked it and it installed itself. KB4056892 was not present, so it could not have been patched.
KB4056892, (when it works!) results in Windows 10 build 1709 version 16299.192.
KB4073290 results in Windows 10 build 1709 version 16299.194 (on 64-bit machines)
KB4073290 appears to me to be a Cumulative Update, that is one which can be installed on any version of (64-bit) Windows 10 build 1709, and will bring it fully up to date.
Dave.