I just called the 1K desk over a different issue, but while I had her on the phone I asked about booking SQ awards. She said they can NOT book them and just happened to have that very issue this morning. A customer had a 10 hour delay and she saw the SQ flight available. She said she tried and got reprimanded by her supervisor for wasting time on it because it can't be done. She was very adamant. I would love to know how some people seem to be making this happen.