Susan, I'm one of those old timers and knew both of them a little, though not well. Let me give you some history here.
Terry went to Beacon Hill High, after I saw him at Brookvale Public. Knight was at Manly Boys High a few years ahead of me at the same school. They wouldnt have known each other well early on because Beacon Hill High played League, Manly Boys High, Union. So Terry played league, Steve Union.
Steve played for Manly RU for several years. When he switched to League, it was to Wests. He came across to the Sea Eagles in 1978 and together with Terry was in the Premiership winning side of that year. The reference to them being two bulls on the beach would probably be during that period. They were both by them well developed and potent.
Steve was 3 years older than Terry and from a different school, and played different sports. Its therefore uncertain that they would have been great mates or even known each other well, until Steve came to Manly. Cant say that for sure but as I said I well remember Terry because I had some association with him in his younger years. Didn't really know Steve because he was two years ahead of me at Manly Boys High.
Not sure who the 'old timers were you are referring to, but I suspect they are referring to the late 70s. And you are right. I attended most matches in 1970, as I did most years back then (my heroes were Billy Bradstreet, Nck Yakich, Pogo Morgan, Bob Batty, Les Hannigan, Alec Tennant. Stanton etc from that period) and Terry didnt seem to suffer concussion that I recall. But then few players were reported with that condition probably because the game was slower and not quite as intense as it is today, and the medical concerns back then were looser, so many wouldnt have been even spoken of.. A lot of players suffer it in todays game.
I can say what Terry was like on the field back in 1970, because having known him at school, as I did a few players such as Garry Thoroughgood, Len Diett who was teacher of mine, and so I took a special interest in watching his development in the game. just as an aside a few years back attended the 50th anniversary of Year 12 graduates from 1968 Manly Boys High. And they all look so old.