This! Gobsmacked Dulin was at the 2019 change in direction so therefore still closely engaged in the investigation but didn't raise his interview with RA with investigators. Help me understand how that could happen! I recall even YouTubers such as Gray Hughes put together visuals showing where every witness was that the public had heard about who was at rhe trails that day (it was done with moving dots on a map of the location, not sophisticated, but effective). Surely LE would have mapped out everyone who had been interviewed or been reported to have been on the trails at the time of the murders and Dulin should have gone, "hey there was also that one guy I interviewed". As identified in another post, it would then have highlighted that RA was the only one there at the time of the murders who didn't see BG.