BLE advertising during sleep

Hi all, I’ve been reading the reference and tutorials to better understand replacing mesh with BLE, but I’ve hit a bit of a roadblock with BLE advertising with the intent to wake from sleep 2.0. Perhaps, I’m misunderstanding what I thought this should do, but if I start advertising then go to sleep with both .ble() and .duration() sleep config, my argon give the red SOS instead of sleeping. However, this works fine on a xenon for some reason. What silly mistake am I making?

If I remove any one of the three: ble wake, duration wake, or advertising, then the argon has no issue.

// run in manual mode for BLE offline mode
SYSTEM_MODE(MANUAL);

//BLE setup
const BleUuid serviceUuid("7cf29a2d-f244-45e3-8bd3-f4b86c974677");
BleAdvertisingData bleData;
SystemSleepConfiguration config;

void setup() {
  // give a human a chance to see the white LED
  delay(5000);
 
  // turn on BLE because we're in manual mode
  BLE.on();

  // create the data for advertising and advertise
  bleData.appendServiceUUID(serviceUuid);
  BLE.advertise();

  // example sleep config from argon reference
  config.mode(SystemSleepMode::STOP);
  config.duration(15s);
  config.ble();
}

void loop() {
  delay(1000);
  System.sleep(config);
}

@ismaelSB will take a look!