In warfare or in any battle, the thing that leaders most needed aside from the tactics and strategies were the people's morale. Hence, due to the actions of Emery's, that made the four youth's morale shoot up, they were able to push back the waves of orcs to a manageable extent. Because of this, they were able to take a bit of a breather and finally noticed the information about the number of teams decreasing.
[67 teams remaining]
This time it took about seven long minutes before another team was eliminated. It was unsettling not knowing whether their situation was better or worse than the other teams.