I have found the same situation and the only answer I could provide is using the in-queue or outbound call flow to play the message.
The in queue flow seems like the right way to go but the message often gets cut off as the the lag time is short.
There may be some opportunity in using the in-queue flow with a bullseye ring and a special skill to lock up the call before allowing it go to an agent.
The Outbound flow can play the message before the caller gets to queue so the prompt is played in full.
I feel like there may be restrictions for certain customers on sending the dialer call to a flow but I'm not 100% on that.
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Chris Martin
CCS Medical
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