However, if I haul ass to my guard captain as soon as the scene stops and the radiant quest starts, get the objective to go take the lizard, go to the lizard and tell him to follow me, I sometimes get his response of "Sir, yes SIR!" that he says to my captain. When this happens the dialog he's supposed to say about "Where are going, and what kind of mission" does not fire. It's like a remnant from the previous scene is lagging behind in his dialog, lol. According to the wiki, the Beth developer says you don't even need to set conditions for your NPC to say their lines in a scene (although I do because of my custom voice type). But this dialog should NOT be available for him after that scene. I even put a "Say Once" check on those lines and they still show up like this sometimes.
What's even more strange is that if I wait 1 hour, the dialog never comes up like that. But I would really hate to have to put a 1 hour timer on this section of my quest. The good news is that it appears to clear up if you save when you get the anomalous dialog and reload. And, it don't happen every time - ONLY when you haul ass as fast as you can from stage to stage (like many, if not most players will do.)