It can be challenging to determine whether your neighbor sees you when you are both outside, especially if they are at a distance or not directly facing your direction. However, here are some indicators that might suggest your neighbor has noticed you:
Eye Contact: If you catch your neighbor looking directly at you and making eye contact, it's a clear sign that they see you.
Facial Expressions: Sometimes, people may show a slight change in facial expression, like a smile or nod, when they notice someone they recognize.
Wave or Greeting: If your neighbor waves or greets you, it's a definite indication that they see you.
Body Language: Your neighbor's body language might give away their awareness of your presence. They may turn their head slightly in your direction or exhibit subtle signs of acknowledgment.
Reaction to Your Actions: If you're doing something noticeable or out of the ordinary, and your neighbor reacts to it (e.g., chuckling, raising an eyebrow), they likely saw you.
Presence of Other Indicators: You might notice your neighbor adjusting their gaze, turning their body, or talking to someone else in your direction, which can imply they are aware of your presence.
Keep in mind that it's not always easy to interpret someone's actions accurately, and it's possible to misinterpret signals. Some people are more reserved and may not react overtly even if they see you. Additionally, if they are preoccupied or focused on something else, they might not appear to acknowledge you, even if they did notice you.
In any case, if you wish to engage with your neighbor, it's best to take the initiative and say hello or wave to make your presence known.