Appearantly there was a reason to stop the match, because I did not hear Murray complain. And if there really was no reason to stop play, you can bet that Murray would want to continue the match immediately with the momentum he had going on. And he did no such thing.
Agreed, they both are thinking about the future towards WTF and being cautious about getting injured in slippery, cold conditions. Don't tell that to the (re)tards here though.