The last agent that answered, other than the conversation manager.
The chat's EnableDecisionRouting input.
Agents the message tags.
OptionalMentionedPeople the message tags (@Person).
The message, as saved.
The chat's reply mode.
OptionalReplyDirect reply (ParentID) to an earlier AI message.
OptionalReplyDirect reply (ParentID) to another person's message.
What decides whether a message gets a routing decision at all.