In a large clothing store, there is a dressing area divided into multiple stalls by partial partitions for privacy. Each stall has three walls and a curtain that doesn't completely reach the floor, leaving a small gap at the bottom. The partitions are tall enough that people cannot see into other stalls while standing. The floor is a uniform color, and there is adequate lighting coming from overhead fixtures evenly dispersed across the ceiling.

Kofi and Min-Seo are two customers using adjacent stalls to try on clothes; Kofi is in the stall to the left, and Min-Seo is to the right. The dressing area is otherwise empty and quiet.

Kofi, after trying on a shirt, wants to get a friend's opinion on how it looks. Instead of stepping outside, he partially opens the curtain and leans out to catch a glimpse of his friend, Sayuri, who is waiting on a bench directly across from his stall. Kofi's view is partially obstructed by the stall walls, but given that Sayuri is directly in front of him outside the stall area, they make eye contact and Kofi gestures to ask what Sayuri thinks of the shirt.

Meanwhile, Min-Seo is putting on a pair of pants, standing just far enough from the curtain that her feet could potentially be visible to someone looking under the curtain from an adjacent stall. While adjusting the pants, Min-Seo notices a shadow moving across the small gap at the bottom of the partition wall between the stalls.

What can Sayuri see from her position outside the stalls? Can Min-Seo tell what Kofi and Sayuri are communicating about? And is Kofi aware of Min-Seo's presence based on his current actions?

Provide a short response.
From Sayuri's position on the bench directly across from Kofi's stall, she can see Kofi's upper body as he leans out of the stall since he's made eye contact with her. However, she wouldn't be able to see Min-Seo in the adjacent stall unless Min-Seo also comes to the entrance of her stall or if her stall's curtain is open and Sayuri moves to a position with a line of sight into Min-Seo's stall.

Min-Seo, noticing the shadow moving across the gap at the bottom of the partition, can infer that someone is moving in the adjacent stall, likely Kofi since the dressing area is quiet and otherwise empty. The nature of her observation - a shadow cast on the floor - does not give her specific details about what Kofi is doing, so she would not be able to tell the nature of Kofi and Sayuri's communication based solely on the shadow movement.

As for Kofi, based on his actions of leaning out to catch Sayuri's attention, he is focused on Sayuri. He might be unaware of Min-Seo's presence unless he hears sounds from her stall or if he intentionally peeks under the partition, which he has no reason to do since his attention is on Sayuri. The partial partitions and curtain setup provide auditory privacy but not complete visual privacy, so visual proof of Min-Seo's presence is not available to Kofi without a change of his position or actions.