Neat Dialog

Do I was on the mission Reunion and someone on blue team asked about Lock’s team and wondered what they were. Chief responded that they were spartans and then someone asked something like “you mean the real deal?” And Chief responded “Like I said they were Spartans.” Thought this was a kind of neat little discussion and I am kind of sad that this is the first time I heard it. It happened as I was scavenging for weapons after taking out the covies that were guarding the second switch in the Reunion level. I wonder if there is other neat dialog that is just buried behind some sort of timer or action. Would be neat to get a collection of these discussions and how to activate them. They could help to make the story a bit better and more human.