Reasoning:
playSoundUI is the only way to play during briefing and debriefing phase any audio - quite unfortunate its not more flexible. its very powerful for voice over or music use in these phases or also mid mission to make sure you have best volume to understand conversations. yet if people want to skip or mute, cant be done atm is seems 😦
only playSoundUI works in debriefing phase or debriefing phase, and its best for conversations atm - only downside is you cannot stop/cancel or adjust their volume (only with the next event)