Hello IMSC, thanks for responding. About the Ascendant being involved in a Grand Trine, YES, that IS important and that you can count as a real triangle because the Ascendant is so very personal.I had to include configurations involving the Ascendant when I did my studies.
Chiron is another matter.For many astrologers Chiron has become more and more important, but I think it shows more where you get the opportunity to heal yourself by healing others. I dont know in how far Chiron gives off energy. If you are a very selfless and sacrificing being (Pisces and 6th house themes strongly accentuated, then you are automatically someone who will try to heal others and also you can be taken for a ride because you are to nice to people and this could hurt you. Chiron, i.m.o. does a bit of the same, you help others but you cannot help yourself from pain inflicted on you. That's why I look for these traits elsewhere in the chart. But the placement of Chiron (house) can show an area of discomfort.
Indeed every astrologer of importance has his own ideas and they are usually based on years of experience. So if they think that they have seen many Grand Trines involving Chiron making a real big impact and especially Chironic impact, then OK, use it like that. Look for yourself in how far you think that Chiron has played a part in your chart.Then compare that to the house Chiron is in and see if you notice actually more of his workings in that house. I feel that there where you find Chiron in your chart, there it is where you could get painful experiences. Hope this takes some of the confusion away.
Cheers, Star.