Communicating between server and client, both updating an indication characteristic at the same timehttps://devzone.nordicsemi.com/f/nordic-q-a/69195/communicating-between-server-and-client-both-updating-an-indication-characteristic-at-the-same-timeHi, I have a client/ server question regarding indication values from both the server and the client. What is the message flow? For example. Can the indication value be sendt to the client, before an ACK is sent back to the server? Example Serveren-USTelligent Community 13Tue, 08 Dec 2020 14:21:34 GMTRE: Communicating between server and client, both updating an indication characteristic at the same timehttps://devzone.nordicsemi.com/thread/283846?ContentTypeID=1Tue, 08 Dec 2020 14:21:34 GMT137ad170-7792-4731-bb38-c0d22fbe4515:5046f033-67fc-42a1-ba6c-941dc5644842Simonr<p>Hi Bjarke</p> <p>Please check out the the message sequence charts for the <a href="https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.s132.api.v7.2.0/group___b_l_e___g_a_t_t_c___h_v_i___m_s_c.html">GATT Client here</a>, and the <a href="https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.s132.api.v7.2.0/group___b_l_e___g_a_t_t_s___h_v_i___m_s_c.html">GATT Server here</a>. The ACK does not have to be sent straight away, and can be responded to in the next connection interval if necessary.</p> <p>Best regards,</p> <p>Simon</p><div style="clear:both;"></div>