The 1 on 1 convo (just Destiny and Lav) must be at least 5 minutes long.

If they are on a panel with other people, the total exchange between them must be at least 20 minutes. If the panel ends without them fulfilling the 20 minute total requirement, the timer resets. This means that two 10 minute exchanges from two different panels will not satisfy this market's YES requirement.

If it's in a group call (like Destiny talking to Lav with other orbiters hovering in the background) where mandatory participation isn't expected (like a panel), the total exchange between Destiny and Lav must be at least 10 minutes long.