I agree. The timing would be right for another endurance comp and on Tues Julie did say "the battle for HOH begins"...
They already had the plan for doing a POV and HOH all during the live show because this week was supposed to be a double eviction. Even though they have been on trivia for over 30 min now that doesn't nec. mean they are doing the POV now. They do usually do elaborate walk-throughs for all the competitions they may just be doing that and explaining the live show tonight.
Hopefully they are not doing it now... Also, considering how much they have to show on tonight's show (whether it is live or not) it would make sense to do an endurance comp... then they don't have to show a complete HOH, they only have to show the first few minutes and then end the show.