diff --git a/textile/features.textile b/textile/features.textile
index c2ac4dc3..64d5b572 100644
--- a/textile/features.textile
+++ b/textile/features.textile
@@ -502,7 +502,7 @@ h3(#realtime-connection). Connection
 ** @(RTN7b)@ Every @ProtocolMessage@ that expects an @ACK@ or @NACK@ sent must contain a unique serially incrementing @msgSerial@ integer value starting at zero. The @msgSerial@ along with the @count@ for incoming @ACK@ and @NACK@ @ProtocolMessages@ indicates which messages succeeded or failed to be delivered
 ** @(RTN7c)@ If a connection enters the @SUSPENDED@, @CLOSED@ or @FAILED@ state, or if the connection state is lost, and an @ACK@ or @NACK@ has not yet been received for a message, the client should consider the delivery of those messages as failed, meaning their callback (or language equivalent) should be called with an error representing the reason for the state change, and they should be removed from any @RTN9a@ retry queue
 ** @(RTN7d)@ If the @queueMessages@ client option (@TO3g@) has been set to @false@, then when a connection enters the @DISCONNECTED@ state, any messages which have not yet been @ACK@d should be considered to have failed, with the same effect as in @RTN7c@
-* @(RTN22)@ Ably can request that a connected client re-authenticates by sending the client an @AUTH@ @ProtocolMessage@. The client must then immediately start a new authentication process as described in "RTC8":#RTC8
+* @(RTN22)@ Ably can request that a connected client re-authenticates by sending the client an @AUTH@ @ProtocolMessage@. The client must then immediately start a new authentication process as described in "RTC8":#RTC8. Ably sends @AUTH@ @ProtocolMessage@ 30 seconds before the token expires. Note: If the token has a ttl less than 30 seconds, e.g. 5 seconds, ably won't be able to send @AUTH@ @ProtocolMessage@.
 ** @(RTN22a)@ Ably reserves the right to forcibly disconnect a client that does not re-authenticate within an acceptable period of time, or at any time the token is deemed no longer valid. A client is forcibly disconnected following a @DISCONNECTED@ message containing an error code in the range @40140 <= code < 40150@. This will in effect force the client to re-authenticate and resume the connection immediately, see "RTN15h":#RTN15h
 * @(RTN8)@ @Connection#id@ attribute:
 ** @(RTN8a)@ Is unset until connected