I heard it was possible (details, please).

There is a spell called "Acoustic Remains" that some people have.  You must have enough "heat" to cast the spell, and have already set up the words you will use in your Magic menu.  You then say the magic words in chat followed by your exact player name, with no period at the end.  This causes a pop-up window to appear showing the last 12 hours of dialog in that spot.  It can be cut and pasted in the normal fashion.

Be sure your browser is allowing pop-ups, or it won't work.  Sometimes the pop-up window is not "to the front" of your browser, and you have to check your browser's "Window" menu to find it.

If you are hosting an event but don't have the spell, ask a veteran player to catch the Acoustic Remains afterwards so you can post a transcript of the event on the forum.  If none are available, the Admin may be willing to give you a limited number of casts of the spell for that purpose.