[quote=@Asura]
I'm more speaking on how our past sensei influence our current Chuunin.

For instance, in Cockatoo didn't have Scarecrowman as a teacher, he wouldn't know Chidori, ect.

It also builds interactions and relationships. ie, 'Oh, it's Bob. I was in Bob's squad as a Genin and we did our Chuunin exams together. I fucking hate Bob.'
[/quote]

Like Buddha said, you're free to make up history between the genin / chunnin once the teams are made. Gooooo nuts.