Diagrams. I want to see a diagram that tells me the story of some back-and-forth message exchange at a high level so that I have a mental framework for the rest

Diagrams. I want to see a diagram that tells me the story of some back-and-forth message exchange at a high level so that I have a mental framework for the rest of my reading. Maybe something built with: https://www.websequencediagrams.com/ https://www.websequencediagrams.com/