I hear ya Bav! You may very well be correct!
I do remember the one time I came across another Porsche I totally got snubbed. :ah: I was at a stop light waiting to make a left-hand turn. He was across from me on the opposite side of traffic. As my light turned green and I began making my left turn, I gave him my brights to say hello (re: I thought he was another fellow 986 owner)...but got the big 'ol NOTHING back....as I turned I realized he was driving a 911......oh well, nothing lost.
Actually, I first came across this cordial waving business when I drove my dad's vette as a teen. I have to admit, the vette owners /drivers never failed to wave or give a quick blink of their brights. I was a bit shocked at first....but thought that was really nice.... so, I when I got my Porsche many, many, many years later....tried it...didn't work....oh well....says something about vette owners (Right OHIO???)
Maybe we should have a 986forum SIGNAL