You are both correct, heating oil is what the airlines use.
Phew! That's a relief! Looks like I am still up to speed with the day job.
More relevent to this forum is that most of us don't directly purchase Jet A.
That too is true. However, there is absolutely no direct market on which to hedge the price of AVGAS. Those who need to (and there are a very few) tend to use hedges constructed around crude oil futures and accept the basis risk. Crude Oil price movements remain the largest single component of AVGAS price variations, so that the risk is not particularly extreme.
2D