NPC Chatter Repeating In St. Martial

[CraterLabs]

I was in the eastern Jackpot neighborhood during a Banner event, and noticed some NPCs were repeating dialogue, like this:

 

 

For context: that Tiger Yellow Ink Man said that to an associate (and I believe the associate said the same thing), but then when I moved in to attack them, they repeated the phrase like it was a bit of attack dialogue.

 

For the two Freakshow a minute later, one said the line first, and then the other said it to the first one in response to it.

 

I ran around for a bit since I was trying to find Ancestor Spirits to kill (as one does), and noticed more repeated dialogue here and there, though I couldn't get it to trigger consistently. Though admittedly I didn't try long, I only needed to kill three Ancestor Spirits after all, for reasons that are definitely clear beyond any need for explaining.