How long must a player be away from the site before they're considered gone?

In regards to the new username claiming requirements, for clarification, what is the minimum length of time a player must be not actively playing at Wolf to be considered gone for the "player no longer on WOLF" requirement?

We don't have an official guideline. Have you tried to get in contact with the account owner? If they don't respond to PMs, we'll probably assume they're not in game. If you're unsure, please feel free to ask about a particular account or player!

Oh, I'm not interested in claiming any accounts or anything like that! I'm only asking to clarify when someone is considered genuinely gone for that requirement versus just taking a break for a few months or a similar circumstance. Not responding to a PM within a reasonable number of days makes sense. Thanks!