All literature available claims that this unit is similar in features to the Sena 10 system.  One of those features is audio-multitasking. Given the cost of these units, you would imagine it would have the best that Sena can offer.

Please add this feature to the next version of the firmware.  

By the way, this product was introduced in 2018 and the firmware is still V1.0. When can we expect a new version?