I was able to get the GE installed in another room of my house using this: [FAQ] GE 3-Way Wiring – I have the ‘light between switches’ setup on my existing.
My last trip to Lowe’s, I guess they’re discontinuing those? (If you need to stock up, they were on clearance for pretty cheap) so I grabbed an Eaton Universal Dimmer and Accessory Dimmer assuming it would operate the same way. It does not appear to, and with my limited knowledge, it doesn’t look like it can based on the instructions https://www.eaton.com/content/dam/eaton/products/wiring-devices-and-connectivity/wiring-devices/wi-fi-smart-devices/wi-fi-smart-universal-dimmer-spec-sheet.pdf
Their YouTube video on installation has this
This might just be way easier to get the GE again from the giant rainforest?