I want them both in the same file with a cover page that links to both of the databases and can redirect back to the cover page.
I'm guessing that you want to click one of two buttons here. Button one takes you to one database and Button two takes you to the other.
Create a layout in one file and make the button for the other file perform a script with the Open File script step. The second button can use go to layout, etc to bring up the desired layout in the current file.
Or you can create a third file with buttons that use open file for both of your two files.
Thats a great idea thank you