Log from window in nRF Connect v3.6.0:
09:30:22.353	Connecting to device
09:30:22.502	Connected to device FC:A9:88:D6:19:4D
09:30:22.641	ATT MTU updated for device FC:A9:88:D6:19:4D, new value is 247
09:30:22.737	Authentication failed with status BLE_GAP_SEC_STATUS_PAIRING_NOT_SUPP
09:30:23.975	Attribute value read, handle: 0x03, value (0x): 43-54-45-4B-5F-43-53-38-5F-30-30-30-30-30-31
09:30:27.465	Connection parameters updated for device FC:A9:88:D6:19:4D: interval 15ms, timeout 4000ms, latency: 0