About this scene
Open-plan office, late afternoon, half the desks empty. He pulls it out at his own desk with one colleague visible two cubicles away over the partition. The colleague is on a call with headphones on. She glances over once when she hears the chair shift. She does a one-second visual check, registers what she's looking at, then turns back to her monitor and adjusts her headphones. She does not look back for the rest of the clip. The keyboard sounds from her side never stop.
What to watch for
The headphone adjustment is the moment. She doesn't take them off. She presses them down tighter. That's a deliberate decision. She's choosing not to be available to the conversation that would have to happen if she actually engaged with what she just saw. Listen to her keyboard rhythm. It speeds up by maybe ten percent right after the glance. People type faster when they're trying to look busy. She types fast for the rest of the video.