The expository dialogue was blatant and atrocious. Ironic, since the writing team was live tweeting. But anyway, there are a couple lines I can remember. Reese telling Finch near the beginning something like "so you get to help people by being a 911 operator and keep an eye on the number that the machine just gave us". Like we the audience could not glean from the situation that was why Finch was being a 911 operator. I think we get the show well enough to know it goes without saying if Finch is out and undercover, he's investigating a number. Then Shaw was chasing down the car and she said something like "thanks to the GPS coordinates you sent me, I'm right where the bad guy is about to be". I think we can also assume quite easily that Finch sent her the coordinates without her telling Finch (and us) that he did so.