ok i just hafta post this cause i can.
cloning chao:
requirements: sa2b game disc
gamecube
1 memory card with chao data
gamecube controller
gameboy advance
sonic advance cartridge
gameboy to gamecube cable
1-3 mins of you time
ok now thats over with lets begin..
1: transport your chao you want to clone over to sonic advance.
2: select pick up on sa2b and have chao garden open on sonic advance
3: select your chao from sonic advance but wait a sec for 4.
4: have one hand on the A button on your GC controller and the other on the gba power button.
5: press A when its hovered over pick up and quickly turn off your power on the gba.
6: check sonic advance chao data and sa2b data for the chao.
7: it should be in both gardens.
Q+A:
Q: it didnt work i only have one
A: try again it should work
Q: omgwtf u £%$"£ you killed my chao!!!
A: you probably either tried it when putting your chao into sonic advance or you didnt do a step correctly trust me it works.