The Lodge Instructions (Part 2 and Part 18)

In Part 2:

Mike: "Is it future...or is it past?"
The Arm: "I am the Arm and I sound like this. Do you remember your doppelganger? (Flashes of episode 30 when the doppelganger got out of the Lodge) He must come back in before you can go out. 253. Time and time again. Bob. Bob. Bob. Go now!"
Leland: "Find Laura."
*Cooper leaves the Lodge and meets with Diane.*

In Part 18:

Mike: "Is it future...or is it past?"
The Arm: "I am the Arm and I sound like this. Is it about the little girl who lived down the street? Is it? (Flashes of Laura talking Cooper in the Lodge from Part 2)
Leland: "Find Laura."
*Cooper leaves the Lodge and meets with Diane.*

Thoughts:
Mike and Leland say the exact same things in both sets of instructions, but the Arm's instructions are different. Cooper finds Laura twice, but both times he loses her and winds up back in the Lodge. I'm still meditating on this... If anyone else has any thoughts about this, feel free to reply.