Can PSP still connect to PS3?

I'm curious to know if it's still possible for a PlayStation Portable, or PSP, to connect to a PlayStation 3, or PS3, for gameplay or any other purposes. With the advancement of technology and the release of newer gaming consoles, I'm wondering if the compatibility between these two devices has been maintained or if there are any limitations that might prevent a successful connection. I'm also interested in hearing about any specific steps or requirements that need to be met in order to establish a connection, if it's indeed possible.