According to the point-by-point it was actually THREE consecutive DF's from 40-15. Not that it matters now, she/they blew it.
Yes, just gone and watched the replay - indeed, it was three in a row !
(More importantly, I got the score wrong - it was at 4-4, not that it maked any real difference as it gave the opportunity to the others to serve for the set - which they did)