Liam and his group had used the afternoon to cultivate for the four hours straight that each of them needed to ensure their health against the malicious fungus that was behind the situation in City Five.
In the early evening, the last of them who needed to cultivate finished his period of special care, when the group finally got moving again.
Jane had already prepared the mixture she had talked about earlier and, as she estimated, the plant behind the parasitic fungus was indeed close to where the two corpses from earlier had fallen.
Those two hadn't moved to that area at random. They were heading towards the place where the plant was, in a last desperate attempt to get it before their deaths.
What made them act in such a way? It's hard to estimate what a mind in chaos, aware of its own mortality and imminent end, could understand about the world around it.