Originally Posted by
ZeroBG82
No, there is only one timeline. One in which our heroes are kidnapped from the diner, travel to 2091, then return to the past and still fail to stop the destruction of the Earth. The flashback characters acknowledge events that happened in the 2091 future, so, again, those are our same characters after they return to the present day from the Lighthouse. We aren't seeing two timelines, we're seeing a loop. The question becomes, how do the SHIELD team break the loop? What can they do differently to change their fate?