Can a buy market order be matched with a sell market order in Forex trading?

External question — Personal Finance Stack Exchange Author: Diego vDev Original post: https://money.stackexchange.com/questions/54158 License: CC BY-SA 3.0 — https://creativecommons.org/licenses/by-sa/3.0/ Adaptation: HTML converted to plain text; contact email addresses removed. Should Market-orders be always matched with Limit-orders with best price on the opposite book? Or is there a case scenario where a Market-order could be matched with another Market-order? At which price?