I actually did a test the other day between Siri and Google Assistant. Now preface this i utilize only Google Calendar. I have that connected so it imports into Apple Calendar.

I ask Siri when my next Ortho appt is. She tells me right away.

I ask Google Assistant when my Ortho appt is. It’s like “I don’t know what the fuck you are talking about”.

I do the same but as when my next appt at the specfic office as i plug that in each time on my appts into Google Calendar. Again only Siri got it right.

Moral of the story, Siri might be dumb at some things but smart in others. And Google Assistant isn’t the smartest thing either.