Straight line, it could go either way but acceleration, turning, mobility, backwards...Orr without question.
Absolutely. Orr played as a forward from ages 5-10, his Coach Bucko McDonald moving him to what he felt was his "natural position" at that age, his father Doug actually disagreeing with the decision at the time but after watching the results....
then there was the matter of Orr's access to natural ice as a kid, a river running into Georgian Bay from his home in Parry Sound (and free outdoor rinks as well); glare ice, bubbled & choppy at other times and areas and miles of it. Even just ragging a puck in a solitary pursuit, that'll teach you how you how to "dance", training ones vision to see ahead & down while keeping your head up, a myriad of obstacles & hazards to be cognizant of.
Coffey was born in 61 & grew up in Weston & played in the GTHL. Free outdoor rinks certainly available & fairly plentiful in Toronto during that period, though whether or not he had access to any of them in his neighbourhood I know not as the biographical inf on his upbringing is fairly light. Obviously beyond the innate ability however, I'd imagine he just must have played a lot of shinny somewhere and did have a local rink, as it takes a considerable amount of confidence learned through free play as a kid to have been able to cycle & make the moves he did.
Both of them had that peculiar bow legged stance, though in Orrs' case it was far more pronounced (Bourque another in that mold), Coffey more a flat track thoroughbred runner to Orr, who was more akin to a Steeplechase racer with a bit of Hunter & Jumper thrown in for good measure. As adept on the flats as he was at facing obstacles.