>>40949248Surprise Trade has a local feature. You can be online, or if you walk with your switch, you can trade with random people who also have their switch with a surprise trade. However, there wasn't a hidden menu for it on local connection on the 3ds. Clicking it will prompt you to go online in Gen 7.
Only real "evidence" I've seen that there might be a GTS still is the leak page is also missing the battle information. So maybe there is some building or another menu for online.
