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First of all, thank you for your reply, I have a look at simpleBLEObserver_HandleKeys(), and I assume you refer to this part:

// Display discovery results
if ( !simpleBLEScanning && simpleBLEScanRes > 0 )
{
    // Increment index of current result (with wraparound)
    simpleBLEScanIdx++;
    if ( simpleBLEScanIdx >= simpleBLEScanRes )
    {
      simpleBLEScanIdx = 0;
    }
        
    LCD_WRITE_STRING_VALUE( "Device", simpleBLEScanIdx + 1,
                            10, HAL_LCD_LINE_1 );
    LCD_WRITE_STRING( bdAddr2Str( simpleBLEDevList[simpleBLEScanIdx].addr ),
                      HAL_LCD_LINE_2 );
}

I had already checked simpleBLEDevList[], but according to the documentation the gapDevRec_t structure only has eventType, addrType, and addr fields, so I don't know how to get the custom advertising data from them.

Maybe I'm missing something?

Thank you, I can't check if it was what I'm looking for until monday, but I appreciate so much your help!

EDIT: Sorry for the delay, it works like a charm! Thank you very much!