Unlimited Refresh Token - site never auto-logs out

Just bumping this to see if anyone has any insight.

Particularly if someone could explain what would happen if, for instance, my settings were:

I would take this to mean that after 5 minutes the access token expires but the refresh token is used to get a new access token. This refresh token will never expire unless the app(?) is used every 10 minutes?

This is where I get a bit confused - but will expire if not used every is a bit vague. What is being used?

If i set the refresh token lifetime to 10 minutes instead of unlimited, the app logs out after about 20 minutes or so - kinda what I’m expecting.

So what should happen in the case of an unlimited token?

Thanks again!