Actually on tibia RL, what happens is different.
This is an experiment i made myself with a friend with a lvl 1 character.
I logged in with the lvl 1, just after that my friend logged into the lvl 1, what happenned to me was that i got kicked, but my friend was playing with the char, when i entered with the lvl 1, my friend got kicked but i was playing with the char.
In other words what on tibia RL happens is that when you connect from a different place it redirects the character information to that place, so if your connection collapses and your character is still inside, if you connect again, tibia stops sending the information to where it was sending it (in this case nowhere) and starts sending it to your computer.