Yea, I'm starting to doubt the tracking idea too as I originally got behind the idea because it just seemed incredibly unlikely that an old dude and a fool like Pete could escape the Mallers. But after much deliberation I'm mostly in agreement that the Mallers after twice attacking the Tower and losing significant numbers of their force would not be as strong as I originally had thought. Finding the fortress that is the Colony might also be allowing them to relax a bit, which might have aided Glenn and Petes escape. So perhaps it's not so unlikely that Pete and Glenn were able to escape on their own merits.
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