The outage was all over an hour+ after it began, although the TP Link status report link did not indicate this for a while afterward (suppose they wanted to be sure before saying anything.)
Apparently, Amazon Web Services (AWS) Cloud, was the culprit; not TP Link servers this time. This disclosure exposes a dirty little secret, and it is that Google Home uses AWS to run their services. So, having a Google Home a a backup for Alexa is for naught since they both run via the same cloud service!
I wonder what other services of both platforms got hosed; I never explored that during the outage.