Unfortunately, Remote Play only works when both systems are on the same local network. (tomsguide.com)
This version also includes the new Japanese heister known as Joy, a hacker with her own unique perks, weaponry and awesome LED mask, as well as a local play multiplayer mode so Switch players can join up in the same local network. (glitchcat.com)
Make sure both devices are hooked up to the same local network; without some very complicated network re-routing there's no way to play your games from a remote location, and even if you, could your inputs would be delayed. (techradar.com)