He is NOT talking about connecting the 3DS with the Wii U. He is talking about using the screen on the Wii U controller as the GBA was used when connected with the Gamecube. Connecting the 3DS and Wii U would just cause all the same problems as before. There is a reason the second screen is included in the box this time.
As a side note, Pac-Man Vs. is the most fun I have ever had with a local multiplayer game.
Switch Code: SW-7377-9189-3397 -- Nintendo Network ID: theRepublic -- Steam ID: theRepublic
Now Playing
Switch - Super Mario Maker 2 (2019)
Switch - The Legend of Zelda: Link's Awakening (2019)
Switch - Bastion (2011/2018)
3DS - Star Fox 64 3D (2011)
3DS - Phoenix Wright: Ace Attorney (Trilogy) (2005/2014)
Wii U - Darksiders: Warmastered Edition (2010/2017)
Mobile - The Simpson's Tapped Out and Yugioh Duel Links
PC - Deep Rock Galactic (2020)