Garmin Coach and Instinct

Hi everyone,

I have a question about the compatibility of the Instinct watch and Garmin Coach. According to Garmin the instinct is not compatible with Garmin Coach.

I can however access garmin coach on the garmin connect app, as well as the desktop-page of garmin connect. From here i am able to create training plans and have them synced to my Instinct. I am also able to access the workouts and complete them. I have only done the benchmark run yet though, but i got "good job" as a feedback from the coach, and new workouts planned. All this makes it seem like it.. works..?

So now I'm confused. If the Instinct is incompatible - why do I even have the option to create and complete workout plans using Garmin Coach? Is the Instinct somehow semi-compatible? I'm a bit hesitant to commit to a program not knowing if I'll get the full benefit from it, or if it will just collapse mid-way due to missing sensor data and what not.