@penelope Sending the info to a separate window could be done but I'm not sure how useful it would be.
To get the aka for a user in a channel you can always just right click the nickname and select AKA - check nick.
You can also bring that info up with ctrl+f Nickname with a few clicks.
You may also add a section of code like this to your remotes:

alias CheckOn { window $+(@,$$1) | filter # $+(@,$$1) $+(*,$$1-,*) }

After this is added: Just type /checkon NickNameHere In the channel window and a window will open with all mentions of that nickname, including the aka line.