FHm. I think at the moment this is not possible. Maybe you could add a custom screen before you redirect to the zitadel login page? And then send the idp id directly to ZITADEL, so we can redirect to the choosen server instead of showing the page with all the buttons
FI don't really understand your question. So if you say user will login the app, this means login with ZITADEL? So I guess you would need something in between the app and the zitadel login, that decides which idp you need
FOk now I understand, so the authentication part is possible with another server. the authorization part not out of the box. but i think it would be possible to get the roles in the token of the second server and then map it with a custom action in server1