Hi Christopher:
Good question but it is not up to the BOM4.1. You need to find a device that will sync up to multiple Bluetooth Receivers. Google has number of options of Bluetooth hubs that will sync up with two Bluetooth Receivers.There is also an app called AMPMe. Or check out this link: https://learningregistry.org/reviews/best-bluetooth-transmitters/
TimL/5-15-2020