Lisa looks for Jack downstream and Tim looks for and finds an injured Jack upstream. A following scene shows Tim helping Jack back to the cabin from the downstream side of the cabin.
In episode 10.8 (Here and Now), Will Vernon mentions his ex-wife by name. His spoken and subtitled dialogue clearly reveal his ex-wife's name to be "Carol". Yet in 12.10 when we see and meet Will's ex-wife (portrayed for the first time onscreen by Victoria Snow), Jack calls her "Doreen".
Someone should have asked what would happen to Will's herd of wildies.