Except LE told us they were two different people, not a different representation of the same person. But also, the killer would be a combination of both. And that's when people's heads started to spin.
I think both statements will actually be accurate in the end, but it won't make sense to us until we find out LE's strategy.
I was looking for this yesterday and never found it, but after the PCA was released, I read somewhere that the three juveniles had described the man they saw near FB to LE before the BG photo release on 2/15/17. As far as I know, we have not heard when the woman came forward who saw the man on the bridge, and MS reported that the "muddy and bloody" witness came forward in 5/17. So, when the juveniles came forward and their description of clothing generally matched the as of yet publicly unseen video from L's phone, LE likely knew that it was the same man. But the YBG sketch wasn't drawn until 2/17/17, two days after the BG photo was released. That doesn't necessarily mean the witness didn't talk to LE before 2/15, but if they didn't, I wonder if that is why LE didn't release the YBG until 2019. It does not apparently match the person who the rest of the witnesses described, possibly? IMO, none of the witnesses from the PCA are the source of YBG (I could be totally wrong with that). And this, IMO, is a key piece of information that we won't know about until it possibly comes out at trial.