The new expansion is sweet! Unfortunately, with a bunch of new cards, there is bound to be some rule discrepancies. The only big problem we ran into was Siege of Winterfell.
If anyone who knows would be so kind as to list all the ways that Seige of Winterfell prevents you from obtaining power. The issue arose with the word "claim" on the Agenda.
Siege of winterfell.
"You cannot claim power for your house except during M challenges. Response: After you win a M challenge claim 2 power for your house."
From our interpretation, this only prevents claim from unnaposed intrigue and power challenges, though 'taking' power from your opponent as a result of the claim of a power challenge. As it is moving power not claiming power, it was argued.