Lyric T6 Pro Wi-Fi

So… it appears that the Lyric T6 Pro Wi-Fi will not connect to ST.
It is not showing up in the list of available items after I authorize SmathThings access to Honeywell services.

Support says it only works with this:

Anybody have any ideas?

I just had this thermostat installed thinking I could hook it up to Smartthings, but according to Honeywell’s website The Lyric T6 only integrates Apple Home and Alexa. The Lyric Round integrates with Apple Home and SmartThings. “Lyric” must be a brand name rather than a single set of APIs, otherwise I don’t understand why they don’t all share the same integrations.

Has anyone taken a look at how this thermostat communicates?