[cattonIBB]

I think you're right Zippy.
Also, the filming went on all day, judging by some ex-housemates's twitter posts. It started early in the morning, and didn't wrap until the evening. So surely they could've had a break whilst the genuine funeral service took place, if indeed there was another funeral at the same time.

Equally though, if there was another funeral, you can only sympathise for the family/friends who understandly wouldn't want a tv crew filming near their moment of grief.