Idk

[wowsoamasing]

on my Galaxy a13 I can't figure out how to connect to Bluetooth speakers at the same time and play audio out of them at the same time

[Angelito32]

I dont think that's possible, you'd have to have multiple audio drivers in your A13s firmware, ...
Goes for any hardware of any kind

[mermaidcaviar]

Mono audio setting maybe.

[nullandvoid]

I do not believe that is possible with A series phones, certainly would not be with an A16, being the phone with the least features.  It is my understanding this feature is on available on S series (S8 and higher), Note (Note 8 and higher and Tabs (S4 and later).