My take on this is that the general idea is you have to log in at least once a month, or your character automatically will die.
How do I come to this?
- Causus Belli - a player has exactly 28 days in which to challenge said CB and take back their titles. To me this means, either they are so lazy (or decide to change their character completely a result of CB) or don't log in after this period, then the title is yours.
- Land ownership - Adverse Possession allows you to take over someone's land and if they don't visit in 28 days, it's yours! So again the same time frame, thus similar reasons for no show of the O/PC.
- Now, this is more speculative - Permadeath Timer - I'm recalling at least a Discord coversation wherein we were treated to info that went more or less "if your OPC is CdG while you are offline, you will immediately spirit walk upon your return, but if you don't log in within a certain timeframe, their is a permadeath timer that will make the body start to decay at a certain point.
- That tells me that there's a 28 day timer (or maybe only a week? who knows) for an obviously NOT close to death character (spirit loss and age may factor in) to come back to the same body, else loss that spark at the end of the timer.
There you have my thoughts on the matter.