1) yes, you can disconnect it onece you're on hekate's menu. no it doesn't matter.
2) I don't think you can.
3) the only "pro" would be for nand restore, you can't restore a splited rom dump, you need to join the parts on a computer and copy it back on an exfat sd card. (you can zip a fresh nand on your computer btw, and it will be less than 1Gb, ofc the switch wont be able to read the zip archive, so it's just for archival purposes)
don't forget to dump boot0/1 too
2) I don't think you can.
3) the only "pro" would be for nand restore, you can't restore a splited rom dump, you need to join the parts on a computer and copy it back on an exfat sd card. (you can zip a fresh nand on your computer btw, and it will be less than 1Gb, ofc the switch wont be able to read the zip archive, so it's just for archival purposes)
don't forget to dump boot0/1 too













