Conceptual vehicles' fruits do not really compare to the fruits of Dzogchen's 4 visions/thogal & if they claim so it is false.
I'm not saying that you are wrong. I merely would like to point out that Garchen Rinpoche, a man widely believed to be realized in Dzogchen and Mahamudra, told me the following: The Four Yogas of Mahamudra and the Four Visions of Thogal correspond one to one and both can result in Rainbow Body. He repeated that in his Ganges Mahamudra transmission that you can even achieve Rainbow Body if you want to. In my talk with him he said the different results of leaving relics etc., is to show disciples their commitments. He repeated several times that there is no difference in the results of the lineages. I'm still a bit baffled by his comments. But I'll take it at face value and with a grain of salt. There are many stories of Mahamudra mahasiddhas leaving no remains behind. There is a clear anecdotal history of rainbow bodies in 84 mahasiddha lineage
. I also agree that Thogal is a very privileged and special method not like anything else, extremely fast and it is the effortless path beyond cause and effect. That's the most amazing thing to me. The fact that Ayu Khandro spent something like 50 years practicing yangti and didn't achieve rainbow is telling us something. High hopes at this point is not very important.
Yes it was me who posted Tulku Urgyen Rinpoche's book quote here very recently saying the 84 mahasiddhas & 24 of 25 disciples of Padma achieved rainbow body. No point quoting my post & saying that to me the next day as something new! However the 84 mahasiddhas did not mix Vajrayana with Hinduism as you often do openly here nor did they make plans to teach such novel creations to others. In fact Guru Rinpoche warned in his prophecies about people in future mixing Dzogchen with other paths as new ideologies. This is one of the worst things anyone can do. Finally the fact that Ayu Khandro did not manifest rainbow body tells us nothing negative about yangti or her level of realization as students of her students did achieve it.