On marriott.com my account shows: "Now It’s Personal. Enjoy exclusive Ambassador Service through January 2020."
On the Marriott app it shows my nights (>100) and my spend (<20k) with no comment about the validity date of my status. It tells me how much more I need to spend for AMB.
Does the website and/or app know my night count split SPG vs Marriott and it does it know if I have more than 100 with SPG which is why I am qualified for AMB through Jan 2020? Somehow I have doubts about that.