https://devzone.nordicsemi.com/f/nordic-q-a/81105/discoverattributes-w-node-js-pc-bly-driver-takes-3-secondsHi, We have firmware running on a 833 board, and we had noticed that connection times with a NodeJS central takes around 8-9 seconds. We thought that this had to do with the amount of characteristics on our BLE service (~40), so we tried to &#39;combine&#39;en-USTelligent Community 13Tue, 02 Nov 2021 08:29:04 GMThttps://devzone.nordicsemi.com/thread/336989?ContentTypeID=1Tue, 02 Nov 2021 08:29:04 GMT137ad170-7792-4731-bb38-c0d22fbe4515:a95ba55d-6930-48b4-a4dc-4c416ef0a66dSusheel Nuguru<p>Hi,</p> <p>It would help a lot to understand the delay in completing the discovery procedure if you can attach the <a href="https://infocenter.nordicsemi.com/topic/ug_sniffer_ble/UG/sniffer_ble/installing_sniffer.html">air sniffer log/trace</a>. I am not the expert of pc-ble-driver, but nonetheless, the air sniffer trace should give us more info on why it takes so long.</p><div style="clear:both;"></div>