Rush Hour - Nest Thermostat

I would like to send a notification to my phone when my Nest is put in Rush Hour Mode. I can see it is in this mode on the thermostat, but there does not seem to be a status of Rush Hour that is sent as a state change.

Does anyone know how to get access to this information?

I’ve been able to get notifications but only via the Nest mobile App, not via home assistant, as this entity/state doesn’t appear to be available as part of the Nest integration.