The Scott company site has their information wrong. Have seen other info corroborating your timeline.

Since I swim like a stone, and don't participate in time trials, have never been part of the tri scene. My first exposure was in the video clips of the 1989 Tour, and the accounts I have seen of the final stage formed my understanding (incorrect - who'd have thought John Tesch was ever wrong about anything ) about the timeline.

That said, I still haven't come to terms with disc wheels, recumbents, aluminum frames, soft ride geometry, Hellenic stays, electronic shifting, monoforks or aerobars.