Hey integration -
You should be able to trigger the two audio cues to play in your level blueprint. Just turn off the auto play feature in each sound, open your level blueprint. And create something like this:
Now technically you should not see a difference in perceived start time between these two audio tracks, however the play function for audio has the ability to set the exactly start time in milliseconds, so if this does not work for you, you could dial in the exact delay this way to ensure that the two audio tracks are played simultaneously.
Thank You
Eric Ketchum