MOO i think they are the same person and OBG sketch was carefully aged because the police on the team thought they saw a middle aged man on the bridge video. Might have been a lot of disagreement about it internally.
MOO in my opinion the video was used to guide the age on the OBG sketch, even so they appear to have hedged their bet w d aged him on the younger side of middle age.
But for me, the thin legs in the jeans never fit the man or the crime.
MOO A middle aged man with thin legs like that would have them due to muscle loss du from work such as driving or standing.
And would not have a lot of stamina for walking, running, climbing up down rough terrain.
MOO and he as he is drawn on the younger side of middle age, he seems too young for that 50+ muscle loss.
MOO physically as I see it the legs in the video would never carry a middle aged man across the bridge and on to kidnap, assault, murder and a get away.
A younger age fits the type of crime so much better, then the legs fit a young man and the physicality of the crime, and it's particular nature of around the forest to commit a crime.
MOO it also points to a local young man with a local connection to the victims.