Can session table be full?


I am trying to find answers for what I am wanting to say, it's all about session timeout

I am seeing demo of Xenforo and it has an option about session time out in admin page

I am wondering if I set session timeout in from default value (60 minutes) to 180 minutes or more than this number ( like 6 hours or 12 hours) then table session can be full?

Does Xenforo have functions to handle this?
It is not possible to set it to more than 60 minutes, at least not without an add-on.
You are right but I searched on this forum and found an addon and a thread that allow me to edit session timeout more than 60 minutes, can be any numbers

Not sure if do that, then session table can be full and any forum can be broken?