u/Apprehensive-Swim162

I wanted to replace the wiper blades on my 2020 Pacifica, which I purchased used 2 years ago. I ordered a 26" driver side blade and a 20" passenger side blade, as is standard. When I went to install them today the 20" blade was clearly too big. I measured the blade that is currently there and it is 17". I can't find mention of this anywhere. What happened? Did the previous owner replace the wiper arm with the wrong size?

Edit: photos added of current 17" blade.

close up

measuring tape