NRF5340, Classic BLE audio to LE Audio relay application

I want to create a NR3540 DK application that accepts a Classic BLE audio connection, from say, a mobile phone with classic BLE (HFS profile?), and then broadcasts that audio using BIS / LE audio to one or more NRF3540 based "speakers".

I see the nrf5340_audio example does something close to what I need. Except the gateway half of that application gets audio input from USB or SD card, rather than a Classic BLE connection.

Is this possible with the NR5340 DK ?

A side question : I note that I saw some older posts on here referencing CODEC_SW_CODEC_SBC, but it is no longer present in the latest SDK. Was there support in older SDKs for Classic BLE audio connection via that codec?

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