Nothing specifically. It's not a technique I have much of a use for so my "instinct" is probably biased to that end. But realistically, it could be anywhere.
Not sure how easy it is with your code, but what I quite often do is just put indicators on each of the message input queue to collect them in arrays. Then when you have a few, change it to a control, save as default, and just play them back over and over again with a while loop in the module.