How to Wall Jump in SMB1 in Super Mario Maker 2

I've never before seen a Wall Jump outside of NSMBU in Super Mario Maker 2, until now that is. Using a well timed duck jump upon exiting a door that's against the wall Big Mush Mario can do a wall jump. This is probably because when you exit a door as Big Mush Mario you are fixed a little bit to the left of the door. This places you inside of the wall for a very brief time (a few frames). This gives you time to do a ducked wall jump.