2 node content displays attached to 1 content type - how to choose which to display? - solved

Issue Summary

We are using Views Attach along with Views to display our library schedules. Views Attach has fixed some of the vexing display problems we were having before and I love it.

However, I am having some trouble with multiple node content attachments showing when I only want one.

I have 2 content types - schedules and exceptions. Each exception has a node reference to a schedule. I use views attach to list all associated exceptions on each schedule node, regardless of where/how that node displays.

Our main hours page is a panel page with only the current hours for each location. So I have a views attach node content display set up to filter exceptions by a certain date range (see viewsattach2.jpg). I also have a views attach node content display that shows all exceptions for the entire semester (see viewsattach1.jpg).

I would like the node content display showing the filtered exceptions to only show on that panel page. Each panel uses a specific view that selects the most current schedule. On every other page that a schedule appears I'd like to use the "all exceptions" node content display instead.

The panel page's url is /hours and each panel passes an argument of $library_name to the view. The other main hours display's url is /hours/$library_name/select and uses exposed filters.

I'm sure there's a way to do this with the Global:Null argument, but I haven't figured it out yet. Everything I try either hides both node content displays or neither one. Currently, I'm using CSS to set the one I don't want showing to "display: none" but I know that is not a very good permanent solution.

I've attached screenshots showing both my views settings and the resulting display (viewsresult.jpg). I can include the views export output if that is more helpful.