Did RA wonder if two of the girls he saw that day on the trails might have been the victims? He's out on the trails that day where two young girls are abducted/missing/murdered. And he saw young girls on the trail. And he saw more than two, yes, but people split up on trails, so just wondering if he was concerned these girls he saw might have been involved. He said he couldn't give much of a description of the girls he saw, think he said one had brown hair.
I doubt the public knew much at that point, they probably had no idea of the est time of death. Wasn't he worried two of these girls could actually have been themselves the victims? Really, really wish we knew more about that interview w/DD. And when I look for the date, I can't find it anywhere, best is "Feb 2017." If RA couldn't "get much of a description," and they probably didn't know the est time of death yet/maybe hadn't even discovered the victims yet, I would think RA would fear two of those girls were perhaps themselves the missing victims. But there's nothing with RA mentioning that in DD's notes.
This is why you should never talk to law enforcement. If he is guilty, I suspect he mentions them because they clearly saw him, and also because from his perspective at that time, they reinforce an innocent version for him. I've found this on a few cases where the killer has incriminated himself by placing himself at a 'safe place' because he didn't think through the implications.
DD follow up question: "Who were the three girls walking in the area of Freedom Bridge?" This sounds like Dulin knows the girls RA saw were not the actual victims, but Dulin has more info than RA at that point. Didn't RA voice any concern on this issue if the interview was on the 14th? If he had voiced concern, would this be the kind of thing that would make it to DD's notes? And if the interview was later than the 14th, shouldn't it have been earlier, since RA, supposedly not knowing the situation yet, should have been concerned? They have the date for that interview, I'm sure. There's some reason why it's nowhere to be seen. The tip line wasn't set up until Feb 16. If he waited to call the tip line, he must have been pretty certain two of the girls he saw weren't the missing/victims. He didn't get a good look at the girls he saw, which makes me wonder how he knew. Interactive Timeline | The Delphi Murders
I think Dulin is just posing question that for corroboration. If they can match the two groups, then they can align two groups on the trails for the timeline
IMO.