Boring!!!!
In episode 3 we go WAYYYY back in time to follow 'Bill and Frank'. They're a gay couple and in the episode we see how they meet, fall in love and survive until their lives end on their own terms. They basically, thanks to Bill, figured out EVERYTHING you'd need to survive the end of civilization. If you reached their set up you will have been set for life.
We spend the entire episode catching up to the current story only to have the main story line moved forward 1 hour and the 2 characters Bill and frank die adding and contributing nothing more to the series except a truck that will be wrecked in the very next episode.
WASTEFUL