https://test-devzone.nordicsemi.com/f/nordic-q-a/87859/nrf52832-sdk17-0-connect-failedHi, I have the following questions. Please help me answer them: Using the protocol stack of the above version, one master and two slaves are disconnected when reconnecting after the exchange of MTU, I put logs in some key positions of the code and founden-USTelligent Community 13 Non-ProductionFri, 13 May 2022 11:56:31 GMThttps://test-devzone.nordicsemi.com/thread/367837?ContentTypeID=1Fri, 13 May 2022 11:56:31 GMT137ad170-7792-4731-bb38-c0d22fbe4515:3eb265c0-db9b-450d-9c1b-49f751d44ea0Hung Bui<p>Hi Liny,&nbsp;</p> <p>When you receive &quot;<span>connect status: 0&quot; it doesn&#39;t meant that the connection has been established successfully. It only means that the scanner now starting to&nbsp;scan for advertising packet from the intended&nbsp;peripheral to connect to the peripheral.&nbsp;<br />So if it couldn&#39;t connect for some reason, you will never receive BLE_GAP_EVT_CONNECTED event.&nbsp;<br /><br />Could you elaborate more on what you described here: &quot;Using the protocol stack of the above version, one master and two slaves are disconnected when reconnecting after the exchange of MTU&quot; ?&nbsp;<br /></span></p> <p><span>What exact issue do you have ?&nbsp;<br /><br /></span></p> <p><span>Please try to capture <a href="https://www.nordicsemi.com/Products/Development-tools/nRF-Sniffer-for-Bluetooth-LE">a sniffer trace</a> so we have more insight of what&nbsp;happening.&nbsp;</span></p><div style="clear:both;"></div>