https://www.animationmagazine.net/short ... to-disney/
The article quotes director Madeline Sharafian:
https://www.youtube.com/watch?v=apx1aUP3MqA"The short’s animation was done in TVPaint. All my student films were done in TVPaint,” says the director. “It needed to be simpler and flatter so that the colors would pop up against those detailed backgrounds to maintain that hand-drawn feeling. We had to do these small lines stitched together, and it all had to be hand-drawn because it was too hard to automate the process.”
https://www.youtube.com/watch?v=LM3YrFMuRU4
This is now the second Pixar hand drawn animated short made using TVPaint. The first was 'Kitbull' in 2019 .
.