PPPoE user treated as unauth Hotspot?

After a PPPoE user is authenticated, can they be treated as an unauthenticated Hotspot user?

I’m taking this route because I need to redirect users to an https web page via walled garden.
This technique can work only in Hotspot, web proxy does not support https.

I know having PPPoE and Hotspot on the same interface works.

Can this be done using MT config only?