This thread now serves as an example of how not to report a problem.
Instead of simply stating the tone failed to play but the TTS message did after the delay expired, it reported:
Anyone who has used Home Assistant for awhile knows that’s nonsense; a delay has no affect on actions preceding it.
The first post also gave the misleading impression that the tone did play:
Yet it never did play because Home Assistant was improperly configured to play local media.
Finally, the Solution post allegedly provides instructions for correcting the cause of the tone’s failure to play (for which delay was blameless) yet it overlooks to follow the instructions found in Media Source.
Any reader wishing to avoid these mistakes should read:
How to help us help you - or How to ask a good question.