I played a round of Dominion last night and noticed two quests that came up for our team. One of them was for capturing a point, and the other was for defending another point. Our team wasn't doing too well at capturing the required point so I decided to help out with the defense point. We defended it for a good five minutes or so, repelling several enemy attack waves. Alas, in the end the enemy managed to capture it.
My question is, how long do you need to defend a point in order to complete the actual quest? There doesn't appear to be any kind of explicit indicator for this in the game. Capturing a point is pretty simple, once you capture the point, you complete the quest. But defending something is different, how do you know when you're actually "done" defending? I can't imagine it's indefinitely, because what would be the point of the bonus you would receive for the quest?