Hacking Just checking some stuff

[Good ol' Phi]

I currently own an EDGE flash card
I want to buy EFA Linker 2

1.Can EDGE boot this thing?
2.Can i use EFAL2 to play GBA games without flashing my DS?(i wont use it to play NDS on it)

Help please havent been here for a long time so i dont remember how this works
I think i can use it for gba games without flashing (since flashing creates a connection between slot2 and slot1 allowing it to play nds games)
so im just checking this stuff before i place my order