On the Horizon 9.3.0 "On-premise installation guide" the first prerequisites is "Sitecore Experience Platform 9.3 or later version".
However, the release notes say that "Horizon 9.3.0 supports Sitecore Experience Platform 9.1 and 9.1.1".
Is Horizon backward compatible with older versions of Sitecore? If Horizon supports Sitecore 9.1 why it does not support Sitecore 9.2?
Note: I did subscribe to the Sitecore Feedback program. As soon as I get access I will share my feedback with Sitecore.