Fisico apparently already has been in the car but got swapped out. From what the commentators are saying, it's helpful for a team to give one driver a two-hour stint at the end (when it is darkening). There is a minimum drive time limit, and it is possible that Fisico was swapped out early so he can do that final 2-hour stint.
Meanwhile, Marco's just overtaken a Mercedes and another car and become 6th. Next target is Bruno Spengler.