Just happened to catch the above and was suprised it was only 15 minutes. Had recorded the Sat late night repeat at full length but was suprised that they had condensed this one - haven't condensed any of the other Sunday DWCs...
15 minutes may not a Whovian Satisfy, but many a trigger happy prime time 'surfer' hook!
In other words BBC3, a channel aimed at 18-34 yr/olds is more important than a piece of programming thrusted upon it by the BBC, after DW became successful (a couple of months ago)
Don't worry about it!
It's BBC 3's primest viewing area of the week!.. not a democracy.