At least on this forum not that many!
There are users that use notifications BUT such a complex rule , I don’t think so!
One rule calling another rule, for such look into Lambdas
That sounds like the “daily announcement” from an Echo device, which kind of Sonos Players do you have? The newer Play:One with an Echo?
All of that is possible, but the text might get to long for VoiceRSS (have to look it up). Personally I would like to SEE most of that information somehow (Magic mirror? )
I would start small, we got annoyed really quick by the talking, you might find the complete idea not so good in the end.
For any specific question on the rule-creation I’m/ we are standing by.