Odd question and something that neither the books, nor FAQ, nor forums seems to have brought up. While it doesn't affect too much, does the overlord lose threat gained per turn for each hero that goes into a portal, or does the OL constantly gain threat equal to heroes while they are inside the dungeon period?
Obviously this would revert back to normal as soon as the next dungeon level began, and I ask because "technically" the hero is no longer on the board, nor do they have a turn, nor can they do anything due to being in transit, except wait for the other heroes (obviously removing them as a threat). This would obviously only turn out important if the OL could use the constant 4 threat per hero even after the other heroes left to play a trap or sudden spawn card. Doesn't seem like a big question, but more of a curiousity.