The allowed total time for mp3's in the ssml tags should be 240 seconds according to documentation (link included below) but appears to just be 90 seconds from my testing. In fact,up until yesterday (Oct 30) early afternoon, the 240 moment threshold was there, and but then seemed to change and go back to only 90 seconds allowed. I know that originally only 90 seconds was allowed and was delighted when things changed to 240 seconds. Can someone please clarify? Thanks! https://developer.amazon.com/docs/custom-skills/speech-synthesis-markup-language-ssml-reference.html#audi
Source: amazon.com