Can i get eos A15 on a google pixel 9 pro with android 14 on it?

so i got a google pixel 9 pro recently and was planning to get eos on it but well it has android 14 on it and the latest update is android 16 and ik i dont wanna do that

Not sure if it is a15 or a16, since you mentioned both but if a16 then the chances are slim. There is no a16 from /e/OS.

You should be able to do a “selective” OTA update from Full OTA Images for Nexus and Pixel Devices  |  Google Play services  |  Google for Developers (link is to caiman for Pixel 9 Pro).

Updating instructions Full OTA Images for Nexus and Pixel Devices  |  Google Play services  |  Google for Developers are with adb / platform-tools.