Connections — /talent/connections
Inbox for member and company connection requests: accept / decline.
Accepting creates the relationship needed for messaging (company accept also wires a member link + conversation where designed).
Messages — /messages (+ /messages/[conversationId])
Threaded chat after an accepted member connection. Attachments supported when the composer allows them.
You cannot cold-message everyone from Browse without going through Connect first (product enforces relationship rules).
Suggested flow
Find person/company on Talent.
Connect with a short note.
They accept on Connections.
Continue under Messages.
Treat connections like introductions: accept only shops you recognize, then message from Messages.