For the first question, it proposes an equal relationship.
Each wears a crown, the inscription above each head is identical, and each holds
in their hands keys to the kingdom. She a scroll signifying knowledge, he on
the other has a bag signifying wealth.
For the second question, the church is chief to all decisions of the state. One
can boost political power by saying that the choices regarding wealth and
knowledge are done with the church in the lead, hence the choices of the state
come with God’s blessing.