Final answer:
When meeting a friend from another class at an unusual lunchtime such as 2:30, you would focus on finding seating and might discuss various topics while observing social norms and respecting personal space. You should also be mindful of the content of your conversation, considering the context and privacy before deciding what to share with others.
Step-by-step explanation:
When you plan to meet your friend from another class at lunch, especially in a scenario where it is later in the afternoon, such as 2:30, you might have some different activities in mind compared to a standard lunch hour. Since the time is unusual for a typical lunch, you and your friend might first focus on finding a suitable place to sit, as your friends did by taking over five minutes to find an empty table. Keeping an eye on the time, as you both checked your watches, suggests that you're aware of your next commitments and want to ensure you don’t run late.
Once seated, you might discuss various topics ranging from classwork and common interests to making plans for future events or simply enjoying each other’s company. Considering the social norms and behaviors that are typical when passing an acquaintance, such as a simple greeting or a brief chat without physical touch that is mentioned in the reference information, you and your friend might conform to these informal rules of a public eatery by keeping your interaction friendly and appropriate to the setting. This could mean that your lunchtime conversation would be casual and respectful of both your personal space and the space of others around you.
Should the conversation turn to sharing personal narratives or discussing class experiences, you may consider the community of your class and privacy matters before deciding what to share. If the discussion involves a narrative worth sharing with others outside of class, consider with whom you would want to share it, reflecting upon the relationships and trust levels with the potential audience, be it your instructor or people outside of your academic circle.