No longer required since the chat persistence issue has been fixed in version 1.20.6

BungeeChatKeeper

Download on Spigot

Since the 1.20.2 update of Minecraft, the chat is cleared on the client side with each server change within a BungeeCord network. To address this issue, this plugin records the player's chat and sends it back to them once they connect to a new server.

Depends on Protocolize

Installation:

• Download BungeeChatKeeper and Protocolize
• Drop plugins on your bungeecord plugins folder
• Restart your server

Support / Issues report:

Please, open a github issue if you encounter any issue with the plugin.