Well, yeah.... I was banking on the coaches not knowing that rule so that I wouldn't have to deal with explaining the choice to the coaches, explaining the enforcement to the Team A coach who will undoubtedly think that we're "screwing his team over", giving the teams their 1-minute break following the score, setting up the free kick, administering the free kick, and then and only then switching sides of the field to start the next quarter.
I was trying to condense that all down into one semi-sarcastic
smiley.
And Team B might not want to take the untimed down in some situations (wind advantage to making Team A kick off at the other end of the field, et al).