JAAS Query

[It Meme]

Okay - I will be upfront that my JAAS query below is not directly
related to Shibboleth.

This list has great JAAS experience and the question does involve
Shibboleth work-flow.

I have a custom JAAS plugin, which authenticates users against our
database, for our Identity Provider.

There is requirement, that after authentication, users agree to policy
guidelines, before being forwarded to an SP.

Question:

After authentication, in the JAAS stack, can I display another page,
before handing back to the IdP?

Before spending many hours testing this out, I hope anyone can
validate if this can occur.

Thanks.