To be fair, I saw Dr_Dave and Dr_Dace in the same place, when they were sword-fighting on top of the Statue Of Liberty. But I was a long way away (Scotland)...
I can't believe that Yub has even mildly suggested that Dr Dace is in any way related to Dr Dave. It's like saying Dame Vera Lynn liked vigorous anal sex with John Craven.
It's just NEVER SAID.