Only by a few minutes. If you run the numbers for the day and location through astronomical software it looks like the Moon was over 20 degrees below the western horizon at the time and place of last confirmed contact.
Thanks for the clarification. I did some searching and discovered that it's 1 minute for every 1500m of altitude (at the equator), so ~7 minutes in this case (less if they decreased altitude after contact was lost). I thought it would be much more than that...