The reason for the limitation is bandwidth and latency. Multiple devices on one Bluetooth controller have to timeslice in 4 millisecond (iirc) chunks. Audio de

The reason for the limitation is bandwidth and latency. Multiple devices on one Bluetooth controller have to timeslice in 4 millisecond (iirc) chunks. Audio devices in a high quality mode consume a substantial amount of the overall bandwidth. It also doesn't matter if your packet consumes the full size of a chunk of not, all of them are equally sized. You'd have to do two audio chunks and one controller chunk * 2 controllers to maintain a 60 Hz sample rate on the controllers.