Would it be possible to install 2019-2022 accord seats in an 05 TL?

 

I mean, depends on what you mean by "install" here. Can you put them in? Sure, grab a sawzall, a drill and an impact gun and you can make almost anything fit. Now, airbags, seat heat, seat sensors, all most likely are not directly like for like and will take much more creative approaches to be fully functional.