An extra note here; Sonic Adventure DX and Adventure 2 Battle also allow you to do the Chao drop-off and pick-up without a copy of Sonic Advance or Advance 2, just with a turned on GBA without a cartridge in it through downloaded data from the GC. In this instance, it makes a copy of your Chao on the GBA and once you're done playing with it there, you can re-connect it and pick up the Chao copy and it will update the stats of the Chao on your console game. This can also be used to clone Chao by taking the Chao copy and opening up the other game (e.g. instead of SA2B, change to SADX) and picking it up there. Then you can have the same Chao in two games at once. If using the carts, you can just use it to move one from one game to another outright without the cloning.

Great, informative video! I was looking into picking up a Pocket Analogue and was curious about connecting to the GameCube!

Try it with the Game Boy Player!