Maybe, but Zack is one of Sofia's most capable students, and he'll probably find a way to fit himself into this event because he's smart.
He could have been following Sofia for a long time, we don't know all this yet, there are still a lot of plot twists and turns, who knows, maybe the museum is a secret planned operation by Dylan, who is just testing the boundaries of his mother...... maybe he knows those two guys, and he personally tipped them off, so far there are too many questions, moreover, I'm still not sure that all the characters are alive and did not die in a terrible air plane crash, we don't know for sure either.
Maybe the whole plot of the game is happening in Sofia's head while their plane is falling
In any case, we'll find out when the game is finished.