Not in Rockbox. I use 1Mii Bluetooth 5.2 Transmitter... https://www.amazon.com/dp/B08G8Q7NXZ
Personally, I think it's a bad idea if you want to game for either one of the Bluetooth connections, but I used the link below for BT connection. Connect that to the aux port and your good. I just do music since BT lags.
https://www.amazon.com/dp/B08G8Q7NXZ?ref_=cm_sw_r_apann_dp_VE7WSW7H0T8BY5MHQCDB