I might explain that. With me, I usually type via Wii, which is located in my room. The wireless connection is located in my mother's room, which is in another location. For some reason,the DS can't pick up the connection in my room, while the Wii does. So in order to battle, I must go in the living room, but to type, I must go in my room.
However, when I battle,I don't try to type. So rather than doing two things at once, I either battle, or type, since I don't feel like runing back and forth my room & living room.
I only d/c'ed once, but that was by accident. When the match was over, I was delared loser, I turned it off because I didn't feel like waiting for the "would you like to battle again?" screen, and he didn't get the win. When that happend, I was willing to go back on and run, to give him the win.