topic, i see that it is not possible.
Erik Frèrejean wrote:To clarify, well its kinda possible but that's not something for the fainthearted. You'll have to completely rewrite the phpBB session system to make this possible. AFAIK nobody posted a working solution publicly but I know that its done in some very specific cases.
This indeed can not be done with a vanilla phpBB installation due to the way phpBB handles sessions and related data. It will always overwrite certain data when switching between the boards and with that cause various issues.