I found this word in the Github guide, and I don't understand it.
It is used in this context (emphasis added):
By using @mentions and references inside of Issues, you can notify other GitHub users & teams, and cross-connect issues to each other. These provide a flexible way to get the right people involved to resolve issues effectively, and are easy to learn and use. They work across all text fields on GitHub — they’re a part of our text formatting syntax called GitHub Flavored Markdown.
What does cross-connect mean?