How is implied volatility on future treasuries used to expect Forex volatility?

External question — Personal Finance Stack Exchange Author: MeditationOrBust Original post: https://money.stackexchange.com/questions/153040 License: CC BY-SA 4.0 — https://creativecommons.org/licenses/by-sa/4.0/ Adaptation: HTML converted to plain text; contact email addresses removed. I was listening to some traders talk amongst themselves. One emphasized the importance treasury implied Vol as a useful indicator for forex vol/trading. I don't totally see the connection. I have a vague idea how this maybe true, but was hoping to hear an answer that can explain a clear connection why this maybe true. Thank you.