OK, this works but I'm sure my method was all wrong. I've used the Interface tools a bunch but not for chaining apps, so this challenge was both illuminating and frustrating.
Edit: Now that I've looked at @NicoleJohnson's solution I'm feeling a lot better about my work. Path varies but the hand-off between apps was similar.
See attached for my app!
One weird thing I noticed-- try running the app selecting 152.4 in the first drop down. There is clearly a record with that point, it shows up in the summery tool, but filtering on that exact value does not yield results. Anyone know why?
EDIT: Found an answer to my own question: https://community.alteryx.com/t5/Alteryx-Designer-Discussions/Basic-filter-tool-does-not-work-for-ce...