The amount of time (in milliseconds) to wait when requesting archived messages from the XMPP server.
Used in conjunction with message_archiving and in context of XEP-0313: Message Archive Management.
We can try, but I'm worried as default timeout is 20 seconds, more seconds needed could means that the user is disconnected or have problems with their internet connection or that we're experiencing an issue with our Prosody, all of those will not be solved by a higher timeout.