Thanks for the reply. I understand these NANDs are separated and don't share any connection, I'm just concerned that going online with a different NAND, that is stock firmware, and Nintendo seeing different error logs might trigger something, since I've already accidentally gone online with emuMMC without 90DNS. This is all that I'm worried about and unless I'm misunderstanding something, people being banned for clearing error logs that have been sent to Nintendo would also mean one can get banned for using a different NAND with different logs, since essentially the same thing occurs, does it not? That is, Nintendo's record of your system errors no longer match with what they've seen from your console because you're using a separate NAND with different logs.
Going forward I've decided to simply delete any internet settings aside from my home network which is already configured for 90DNS. I would suggest anyone else do the same and if you want to connect to the internet on CFW while going out, do so as you go along so you never accidentally connect to Nintendo's servers like I did (in my defense, I had been drinking)