Interesting. If you go by Como Park blvd between Hawthorne & Bennett it looks like there is some stone going down along the north side of the road. Maybe that is part of the path? I would think that the path would then just go right out Como Park blvd and continue on the Lancaster route you describe. The path really could not go down Broadway or William through Depew, I wouldn't think.
I'll see what I can find out.