https://devzone.nordicsemi.com/f/nordic-q-a/19046/in-le-privacy-mode-does-the-address-of-the-advertising-entity-change-after-connection-is-establishedIn Bluetooth Spec (CoreV5.0, Vol6, Chepter6, Section1) it is mentioned that the random private address is generated periodically by a timer handler. I could not find any mention on whether the timer should be stopped when a connection is established.en-USTelligent Community 13Tue, 17 Jan 2017 14:34:06 GMThttps://devzone.nordicsemi.com/thread/73629?ContentTypeID=1Tue, 17 Jan 2017 14:34:06 GMT137ad170-7792-4731-bb38-c0d22fbe4515:b57e10f0-a0a0-406f-80f2-656e1223851aHung Bui<p>Hi Sanjib,</p> <p>When in connection the advertising address is not used. It&#39;s the access address (AA) that comes with the Connect request used.</p> <p>If you continue to advertise after you get connected you can observer that the address will continue to change.</p> <p>To read more about the real address used when advertising (BED6 address) and connecting, you can have a look at <a href="https://devzone.nordicsemi.com/blogs/782/bluetooth-smart-and-the-nordics-softdevices-part-1/">my blog series</a>.</p><div style="clear:both;"></div>