https://devzone.nordicsemi.com/f/nordic-q-a/80287/unable-to-scan-with-certain-parameters-when-already-connected-to-a-deviceWe need to connect to multiple devices at once. We are controlling the SD via a serialised connection, with another chip controlling the parameters. If we scan using interval/window of 160/80 (100ms/50ms), everything works as expected. We can scan,en-USTelligent Community 13Tue, 05 Oct 2021 12:31:42 GMThttps://devzone.nordicsemi.com/thread/332621?ContentTypeID=1Tue, 05 Oct 2021 12:31:42 GMT137ad170-7792-4731-bb38-c0d22fbe4515:a6d45338-dc7c-4a8e-9868-bfc19e933008Kenneth<p>It&#39;s very likely the internal scheduler in the softdevice that prevent that the radio&nbsp;to&nbsp;be used fully for 4seconds while there is an active connection with a peer. The reason simply being that the active link would time out.</p> <p><a href="https://infocenter.nordicsemi.com/topic/sds_s132/SDS/s1xx/multilink_scheduling/priorities_and_events_intro.html">https://infocenter.nordicsemi.com/topic/sds_s132/SDS/s1xx/multilink_scheduling/priorities_and_events_intro.html</a>&nbsp;</p> <p>So you need to reduce the scan window.</p> <p>Best regards,<br />Kenneth</p><div style="clear:both;"></div>