Yep, he was on the 1991 Canada Cup team before he played in the NHL. He dished out some huge hits in that tournament.
The Lindros hype was off the charts, a lot of it was related to off-ice stuff. The incident in the bar, the reputation his parents had for meddling, his refusal to go to the Soo, etc.
I was young when he broke in, all I really remember is he was a beast. The biggest, hardest hitting player I'd ever seen.
he had a canada cup gold ('91) and olympic silver ('92) before ever playing in the NHL (his first game was in the fall of '92).
re: daigle hype, you knew listening to it that any comparison of daigle with lemieux or lafleur were ridiculously hyperbolic, like when oleg tverdovsky was called "the russian bobby orr" or petr nedved being compared to gretzky, viktor kozlov to lemieux, keith primeau to messier, vincent lecavalier to michael jordan. the isles GM who drafted him even compared brett lindros favourably to eric (i think this was milbury?)
but with lindros, you knew that he was going to be on that level of superstar. there are degrees of hype, ways of reading scouting reports, and, i'm sure i speak for all those who were there at the time, you just knew from the way you read/hear the hype the difference between a prospect like daigle, who was supposed to be a special player, and lindros, who was supposed to be much much more than that.