The Niqols' sensitivity to mana generally was pretty good, so they sensed Khan and Liiza stepping among their group even if they didn't turn. The humans didn't study that topic in the academy, but some of them had developed decent senses anyway, while others had simply heard the couple stopping behind them.
Paul and the other squad leaders were keeping the three mutated Lysixi that had attacked the group at bay, so many students and recruits had seen Khan saving Liiza. Ilman had even cheered after the event, so missing it had been quite impossible.
The other side of the gorge was quite far away, and the confusion of the battlefield never gave the group the time to perform a long inspection. They focused on the fact that Liiza and Khan were fine, but they didn't go further, so no one noticed the intimacy shown by the couple. Yet, the scene that unfolded in their eyes after Khan and Liiza crossed the bridge left everyone stunned.