Please resolve the PlayStation couch co-op crossplay issue.

I'm playing Path of Exile 2 on PlayStation with couch co-op in 2-player mode. I want to play with a friend on PC via crossplay. When I'm playing as Player 1, crossplay works fine, but when Player 2 is connected, I can't see the PC player in my friends list, nor can I send a friend request.
Why is this happening? Is there a way for the three of us (two on PlayStation couch co-op and one on PC) to play together?
Additionally, is it possible to create a public party and have my friend join the same server I'm on?

I sent an email to customer support, but they told me to post my inquiry on this forum, so I am leaving a post here.