Please make general chat log during games so I can scroll up and tell people are talking about in context.
I don’t understand exactly what you’re asking for, but what you want to do may be possible in a way…just need to make sure of what you want to do.
I believe there is already an option for this : social → discussion channels → display non official discussion channels / official discussion channels.
There’s also the “stay in discussion channels when ingame” in the same menu, but I suppose it’s for displaying the discussions chat ingame, while the previous ones are enough to find the discussion back when the game has ended.
Not 100% sure which does what, but it’s among those. 