Dave Reid,
You are conflating independent approaches with mixed mode.
They are different, one does not lead to the other.
LFAJ,
Taken in isolation, the runways
are far enough apart.
However, I can see that others here know far more about this matter than I, so I shall bow out of the conversation.
Next time I'm in my office I shall pay more attention, there are obviously more people working there then I notice!
