Its a farce, they sometimes say there is 5, sometimes 6, sometimes 7 and the question seems to have changed to England players who made their Test debut since 2003 (which excluded Mark Butcher? I think).
Also they are not saying the answer, just saying yes to those that contact them via mail etc.
Sounds like the quiz question they set was good to....
Which are the 5 players ending in letter r that have played for England since 1997
The listeners have already sent in 7.
You are pretty much there. Merv Hughes has done it at test level, listed in here...
Merv Hughes - Wikipedia, the free encyclopedia
First innings he gets the 9th wicket with the 6th ball of over...over complete.....then 10th wicket with the 1st ball of next over.... innings closes. Hat trick is...
You should tweet them saying that the pinging noises are distracting and spoiling your enjoyment of the commentry and that until it stops you will keep on contacting them.