Community and status
Use the power of community for yourself.
You want to communicate with someone about a particular subject using Matrix. Whatever topic you are looking for is probably available elsewhere, but with Matrix you can have direct conversations. For these packages, you can do what you always do: scour question sites where the answers have been waiting for a long time. This works, but some things are difficult to find; if you enter a chat interface, you can get hints where to go next.