Question about PlayerTtl

Regarding PlayerTTL, the documentation states that

"If a client disconnects, this actor is inactive first and removed after this timeout. In milliseconds."

So my question are
1) does the application need to perform anything when the actor become "inactive"? Or this is transparent and either everything returns to normal after the client "reconnect", or the MasterClient will receive a OnPlayerDisconnected after the time out?

2) Does the disconnect client need to do anything in order to attempt the "reconnect" in question 1?

Thanks
David