How to use throughput routines to connect to any le bluetooth device

Hello, please help. I want to use nrf54L15 to connect to Bluetooth devices (Bluetooth headsets or other Bluetooth devices) and test the throughput between them. Is there any related routine?

I use the following routine to connect to GATT. Based on this routine, you can connect to any LE device, not necessarily the development board.The version is  2.9.0.

Routines

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