I think the conversation would have been a bit more refined than "is it ok like this". I suspect it went more along the lines of "we have this testing setup that is going to allow us to try x, y and z before we build the final pieces. If we do x, y or z are they going to be ok?"
Charlie could easily have replied with, "well, as you know I can't say for certain until you present for scrutineering, but if you follow the rules and do x, y or z then you will be ok".
Looking at the rules again, I still say that the McLaren we saw last week is not in line with 5.8.4 but remain convinced that this is not the design they have told Whiting will be presented in Australia (and got the all clear for).