I know this is a 3DS being played using a Classic Controller but this was done using NTR Viewer for the Wii U so this still counts as Wii U hacking stuff
NTRViewer 3DS - GameBrew
GitHub - ItsDeidara/CaptureAssistant: A capture alignment assistant for 3ds capture cards and NTRviewer
NTR で 3DS を録画してみよう! | larksanのひまつぶしブログ
How to Record 3DS Gameplay in Video Various Ways
How to Record 3DS Gameplay in Video Various Ways
I 3 migliori metodi per registrare il gioco 3DS (con / senza scheda di acquisizione)
The New 3DS TV CONSOLE! | [NTR Redirection + NTR Viewer] - YouTube
Twix 3DS - GameBrew
NTR3.4を使ってNew3DSをキャプチャする方法【偽トロ不要】 - 家賃二万円のブログ
NTR CFW를 사용한 3ds 스크린 녹화하기 - 초안 [니세트로 불필요] : 네이버 블로그
Using NitroStream (NTRviewer) in 11.2 with CFW (easy) (New 3DS CFW only) | GBAtemp.net - The Independent Video Game Community
美品】New Nintendo 3DS 偽トロ不要でキャプチャー可 箱あり CFW(アクセサリ、周辺機器)|売買されたオークション情報、ヤフオク! の商品情報をアーカイブ公開 - オークファン(aucfan.com)