Looking for details from several days ago in a busy persistent chat is a complete pain. There is no way to search for relevant information, and no way to quickly view a particular time series.
There should be a search function for persistent chats that allows you to specify a time period to search in and/or specific text.
For organisations that use persistent chats as a way of logging our activities, this would be invaluable.
Currently, we do a manual copy of the persistent chat contents every 12 hours, but that is a very clunky way of doing things.