In D:OS1 (which is what we're talking about, since they haven't added voice acting to D:OS2 yet), when you're walking around near NPCs (or, more accurately, have your camera near them), they talk. They have a loop of lines they just spout off repeatedly. The loop never stops. However, between each line they say, there's a delay when they're not talking. I didn't actually time it, but it seems like they start saying one of their lines every 30 seconds. This indicates that there's a programmed delay between when they say one line and when they say the next line in their loop. If there was no delay, they'd have to put silence into the audio files, which would be a lot more effort (and disk space), so it's fair to assume they programmed a delay instead.

For instance, say you're hanging out near the cheese vendor. You're just standing there, not doing anything, or sorting through your inventory. Suddenly, without provocation, the cheese vendor exclaims "Be the big cheese on your block with a wheel of the good stuff!" Then he stops talking. Doesn't say anything else, and you keep doing what you were doing, still standing there. Then, a short time later, the cheese vendor says "No one has as many friends as the man with many cheeses!" You didn't do anything, he just said it. There was definitely some time between these two lines. He didn't go straight from one to the other without pause. And here, after his second line, he's silent once again... until 20-30 seconds later when he says "Not in the mood for cheese? That excuse has more holes than a slice of this fine Gorgombert!" You've still not interacted with the man. You didn't express any lack of mood for cheese. He just said it. And once again, he is not talking. Then about 20 seconds later "Be the big cheese on your block with a wheel of the good stuff!" Now, you've heard this line before, about a minute and a half ago. You're detecting a pattern. Sure enough, another 20-30 seconds goes by and "No one has as many friends as the man with many cheeses!" More time, and "Not in the mood for cheese? That excuse has more holes than a slice of this fine Gorgombert!" And it goes on like this until you leave. And it's not just the cheese vendor. No, it's every NPC near you. They are all doing this. They all have their own lines, their own loops, but they're all doing it. They're not all saying their lines simultaneously and then going silent, of course. No, they're offset from each other. But the pattern is there, nonetheless. And it never ends.

There is definitely a delay between each line of the each character's loop, and it seems to be the same for every character. All I'm asking is that the length of the silence between these lines (the delay) be extended. Since the delays seem to be the same length for every character, this suggests that they're all using the same number for the delay, so all the devs would have to do is increase that one number, and suddenly all the characters would have longer bouts of silence.