You recall correctly. I specifically asked a NamUs rep if they compared DNA profiles of unidentified remains to each other who are in CODIS, and was told they did. IIRC, I asked them this question specifically because of the siblings/families who went missing together (like the Guthries and Leslies) but who may have ended up as John/Jane Does in different locations, as these two did. Is it possible one of them didn't have DNA in CODIS? At the very least, it should have been an mtDNA match, being mother & son. ETA: Here is the reply I received 2 years ago.